1
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Chen WJ, Pozdeev AS, Choi HW, Boldyrev AI, Yuan DF, Popov IA, Wang LS. Searching for stable copper borozene complexes in CuB 7- and CuB 8. Phys Chem Chem Phys 2024. [PMID: 38456623 DOI: 10.1039/d4cp00296b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2024]
Abstract
Copper has been shown to be an important substrate for the growth of borophenes. Copper-boron binary clusters are ideal platforms to study the interactions between copper and boron, which may provide insight about the underlying growth mechanisms of borophene on copper substrates. Here we report a joint photoelectron spectroscopy and theoretical study on two copper-doped boron clusters, CuB7- and CuB8-. Well resolved photoelectron spectra are obtained for the two clusters at different wavelengths and are used to understand the structures and bonding properties of the two CuBn- clusters. We find that CuB8- is a highly stable borozene complex, which possesses a half-sandwich structure with a Cu+ species interacting with the doubly aromatic η8-B82- borozene. The CuB7- cluster is found to consist of a terminal copper atom bonded to a double-chain B7 motif, but it has a low-lying isomer composed of a half-sandwich structure with a Cu+ species interacting with an open-shell η7-B72- borozene. Both ionic and covalent interactions are found to be possible in the binary Cu-B clusters, resulting in different structures.
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Affiliation(s)
- Wei-Jia Chen
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA.
| | - Anton S Pozdeev
- Department of Chemistry, The University of Akron, Akron, Ohio 44325, USA.
| | - Hyun Wook Choi
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA.
| | - Alexander I Boldyrev
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322, USA
| | - Dao-Fu Yuan
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA.
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China.
| | - Ivan A Popov
- Department of Chemistry, The University of Akron, Akron, Ohio 44325, USA.
| | - Lai-Sheng Wang
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA.
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2
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Jesse KA, Abad SD, Studvick C, Andrade GA, Maurya S, Scott BL, Mukundan R, Popov IA, Davis BL. Impact of Pendent Ammonium Groups on Solubility and Cycling Charge Carrier Performance in Nonaqueous Redox Flow Batteries. Inorg Chem 2023; 62:19218-19229. [PMID: 37948607 DOI: 10.1021/acs.inorgchem.3c02396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
The synthesis, characterization, electrochemical performance, and theoretical modeling of two base-metal charge carrier complexes incorporating a pendent quaternary ammonium group, [Ni(bppn-Me3)][BF4], 3', and [Fe(PyTRENMe)][OTf]3, 4', are described. Both complexes were produced in high yield and fully characterized using NMR, IR, and UV-vis spectroscopies as well as elemental analysis and single-crystal X-ray crystallography. The solubility of 3' in acetonitrile showed a 283% improvement over its neutral precursor, whereas the solubility of complex 4' was effectively unchanged. Cyclic voltammetry indicates an ∼0.1 V positive shift for all waves, with some changes in reversibility depending on the wave. Bulk electrochemical cycling demonstrates that both 3' and 4' can utilize the second more negative wave to a degree, whereas 4' ceases to have a reversible positive wave. Flow cell testing of 3' and 4' with Fc as the posolyte reveals little improvement to the cycling performance of 3' compared with its parent complex, whereas 4' exhibits reductions in capacity decay when cycling either negative wave. Postcycling CVs indicate that crossover is the likely source of capacity loss in complexes 3, 3', and 4' because there is little change in the CV trace. Density functional theory calculations indicate that the ammonium group lowers the HOMO energy in 3' and 4', which may impart stability to cycling negative waves while making positive waves less accessible. Overall, the incorporation of a positively charged species can improve solubility, stored electron density, and capacity decay depending on the complex, features critical to high energy density redox flow battery performance.
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Affiliation(s)
- Kate A Jesse
- MPA-11: Materials Physics Applications, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Sergio Diaz Abad
- MPA-11: Materials Physics Applications, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Chad Studvick
- Department of Chemistry, The University of Akron, Akron, Ohio 44325, United States
| | - Gabriel A Andrade
- MPA-11: Materials Physics Applications, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Sandip Maurya
- MPA-11: Materials Physics Applications, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Brian L Scott
- MPA-11: Materials Physics Applications, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Rangachary Mukundan
- MPA-11: Materials Physics Applications, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Ivan A Popov
- Department of Chemistry, The University of Akron, Akron, Ohio 44325, United States
| | - Benjamin L Davis
- MPA-11: Materials Physics Applications, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
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3
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Boggiano AC, Studvick CM, Steiner A, Bacsa J, Popov IA, La Pierre HS. Structural distortion by alkali metal cations modulates the redox and electronic properties of Ce 3+ imidophosphorane complexes. Chem Sci 2023; 14:11708-11717. [PMID: 37920331 PMCID: PMC10619540 DOI: 10.1039/d3sc04262f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 09/15/2023] [Indexed: 11/04/2023] Open
Abstract
A series of Ce3+ complexes with counter cations ranging from Li to Cs are presented. Cyclic voltammetry data indicate a significant dependence of the oxidation potential on the alkali metal identity. Analysis of the single-crystal X-ray diffraction data indicates that the degree of structural distortion of the secondary coordination sphere is linearly correlated with the measured oxidation potential. Solution electronic absorption spectroscopy confirms that the structural distortion is reflected in the solution structure. Computational studies further validate this analysis, deciphering the impact of alkali metal cations on the Ce atomic orbital contributions, differences in energies of Ce-dominant molecular orbitals, energy shift of the 4f-5d electronic transitions, and degree of structural distortions. In sum, the structural impact of the alkali metal cation is demonstrated to modulate the redox and electronic properties of the Ce3+ complexes, and provides insight into the rational tuning of the Ce3+ imidophosphorane complex oxidation potential through alkali metal identity.
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Affiliation(s)
- Andrew C Boggiano
- School of Chemistry and Biochemistry, Georgia Institute of Technology Atlanta Georgia 30332-0400 USA
| | - Chad M Studvick
- Department of Chemistry, The University of Akron Akron Ohio 44325-3601 USA
| | - Alexander Steiner
- Department of Chemistry, University of Liverpool Liverpool L69 7ZD UK
| | - John Bacsa
- School of Chemistry and Biochemistry, Georgia Institute of Technology Atlanta Georgia 30332-0400 USA
| | - Ivan A Popov
- Department of Chemistry, The University of Akron Akron Ohio 44325-3601 USA
| | - Henry S La Pierre
- School of Chemistry and Biochemistry, Georgia Institute of Technology Atlanta Georgia 30332-0400 USA
- Nuclear and Radiological Engineering and Medical Physics Program, School of Mechanical Engineering, Georgia Institute of Technology Atlanta Georgia 30332-0400 USA
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4
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Otte KS, Niklas JE, Studvick CM, Boggiano AC, Bacsa J, Popov IA, La Pierre HS. Divergent Stabilities of Tetravalent Cerium, Uranium, and Neptunium Imidophosphorane Complexes. Angew Chem Int Ed Engl 2023; 62:e202306580. [PMID: 37327070 DOI: 10.1002/anie.202306580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/15/2023] [Accepted: 06/16/2023] [Indexed: 06/18/2023]
Abstract
The study of the redox chemistry of mid-actinides (U-Pu) has historically relied on cerium as a model, due to the accessibility of trivalent and tetravalent oxidation states for these ions. Recently, dramatic shifts of lanthanide 4+/3+ non-aqueous redox couples have been established within a homoleptic imidophosphorane ligand framework. Herein we extend the chemistry of the imidophosphorane ligand (NPC=[N=Pt Bu(pyrr)2 ]- ; pyrr=pyrrolidinyl) to tetrahomoleptic NPC complexes of neptunium and cerium (1-M, 2-M, M=Np, Ce) and present comparative structural, electrochemical, and theoretical studies of these complexes. Large cathodic shifts in the M4+/3+ (M=Ce, U, Np) couples underpin the stabilization of higher metal oxidation states owing to the strongly donating nature of the NPC ligands, providing access to the U5+/4+ , U6+/5+ , and to an unprecedented, well-behaved Np5+/4+ redox couple. The differences in the chemical redox properties of the U vs. Ce and Np complexes are rationalized based on their redox potentials, degree of structural rearrangement upon reduction/oxidation, relative molecular orbital energies, and orbital composition analyses employing density functional theory.
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Affiliation(s)
- Kaitlyn S Otte
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, 30332-0400, USA
| | - Julie E Niklas
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, 30332-0400, USA
| | - Chad M Studvick
- Department of Chemistry, The University of Akron, Akron, OH, 44325-3601, USA
| | - Andrew C Boggiano
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, 30332-0400, USA
| | - John Bacsa
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, 30332-0400, USA
| | - Ivan A Popov
- Department of Chemistry, The University of Akron, Akron, OH, 44325-3601, USA
| | - Henry S La Pierre
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, 30332-0400, USA
- Nuclear and Radiological Engineering Program, Georgia Institute of Technology, Atlanta, GA, 30332-0400, USA
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5
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Niklas JE, Studvick CM, Bacsa J, Popov IA, La Pierre HS. Ligand Control of Oxidation and Crystallographic Disorder in the Isolation of Hexavalent Uranium Mono-Oxo Complexes. Inorg Chem 2023; 62:2304-2316. [PMID: 36668669 DOI: 10.1021/acs.inorgchem.2c04056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The development of high-valent transuranic chemistry requires robust methodologies to access and fully characterize reactive species. We have recently demonstrated that the reducing nature of imidophosphorane ligands supports the two-electron oxidation of U4+ to U6+ and established the use of this ligand to evaluate the inverse-trans-influence (ITI) in actinide metal-ligand multiple bond (MLMB) complexes. To extend this methodology and analysis to transuranic complexes, new small-scale synthetic strategies and lower-symmetry ligand derivatives are necessary to improve crystallinity and reduce crystallographic disorder. To this end, the synthesis of two new imidophosphorane ligands, [N═PtBu(pip)2]- (NPC1) and [N═PtBu(pyrr)2]- (NPC2) (pip = piperidinyl; pyrr = pyrrolidinyl), is presented, which break pseudo-C3 axes in the tetravalent complexes, U[NPC1]4 and U[NPC2]4. The reaction of these complexes with two-electron oxygen-atom-transfer reagents (N2O, trimethylamine N-oxide (TMAO) and 2,3:5,6-dibenzo-7-azabicyclo[2.2.1]hepta-2,5-diene (dbabhNO)) yields the U6+ mono-oxo complexes U(O)[NPC1]4 and U(O)[NPC2]4. This methodology is optimized for direct translation to transuranic elements. Of the two ligands, the NPC2 framework is most suitable for facilitating detailed bonding analysis and assessment of the ITI. Theoretical evaluation of the U-(NPC) bonding confirms a substantial difference between axially and equatorially bonded N atoms, revealing markedly more covalent U-Nax interactions. The U 6d + 5f combined contribution for U-Nax is nearly double that of U-Neq, accounting for ITI shortening and increased bond order of the axial bond. Two distinct N-atom hybridizations in the pyrrolidine/piperidine rings are noted across the complexes, with approximate sp2 and sp3 configurations describing the slightly shorter P-N"planar" and slightly longer P-N"pyramidal" bonds, respectively. In all complexes, the NPC2 ligands feature more planar N atoms than NPC1, in accordance with a higher electron-donating capacity of the former.
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Affiliation(s)
- Julie E Niklas
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Chad M Studvick
- Department of Chemistry, The University of Akron, Akron, Ohio 44325-3601, United States
| | - John Bacsa
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Ivan A Popov
- Department of Chemistry, The University of Akron, Akron, Ohio 44325-3601, United States
| | - Henry S La Pierre
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States.,Nuclear and Radiological Engineering Program, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
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6
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Bormotov DS, Shamraeva MA, Kuzin AA, Shamarina EV, Eliferov VA, Silkin SV, Zhdanova EV, Pekov SI, Popov IA. Ambient ms profiling of meningiomas: intraoperative oncometabolite-based monitoring. BRSMU 2022. [DOI: 10.24075/brsmu.2022.072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The primary method of initial treatment of meningiomas is radical neurosurgical intervention. Various methods of intraoperative diagnostics currently in development aim to improve resection efficiency; we focus on methods based on molecular profiling using ambient ionization mass spectrometry. Such methods have been proven effective on various tumors, but the specifics of the molecular structure and the mechanical properties of meningiomas raise the question of applicability of protocols developed for other conditions for this particular task. The study aimed to compare the potential clinical use of three methods of ambient ionization in meningioma sample analysis: spray from tissue, inline cartridge extraction, and touch spherical sampler probe spray. To this end, lipid and metabolic profiles of meningioma tissues removed in the course of planned neurosurgical intervention have been analyzed. It is shown that in clinical practice, the lipid components of the molecular profile are best analyzed using the inline cartridge extraction method, distinguished by its ease of implementation and highest informational value. Analysis of oncometabolites with low molecular mass is optimally performed with the touch spherical sampler probe spray method, which scores high in both sensitivity and mass-spectrometric complex productivity.
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Affiliation(s)
- DS Bormotov
- Moscow Institute of Physics and Technology, Dolgoprudny, Russia
| | - MA Shamraeva
- Moscow Institute of Physics and Technology, Dolgoprudny, Russia
| | - AA Kuzin
- Moscow Institute of Physics and Technology, Dolgoprudny, Russia
| | - EV Shamarina
- Moscow Institute of Physics and Technology, Dolgoprudny, Russia
| | - VA Eliferov
- Moscow Institute of Physics and Technology, Dolgoprudny, Russia
| | - SV Silkin
- Moscow Institute of Physics and Technology, Dolgoprudny, Russia
| | - EV Zhdanova
- Moscow Institute of Physics and Technology, Dolgoprudny, Russia
| | - SI Pekov
- Skoltech, Moscow, Russia; Siberian State Medical University, Tomsk, Russia
| | - IA Popov
- Moscow Institute of Physics and Technology, Dolgoprudny, Russia
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7
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Xu H, Studvick C, Liu C, Xue Y, Popov IA, Sun Z. Single‐Metal‐Encapsulated Double‐Cage [Pt@Sn
17
]
4−
: An Exception from Group 14 Endohedral Clusters. Chemistry 2022. [DOI: 10.1002/chem.202203328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hong‐Lei Xu
- State Key Laboratory of Elemento-Organic Chemistry Tianjin Key Lab for Rare Earth Materials and Applications School of Materials Science and Engineering Nankai University Tianjin 300350 P. R. China
| | - Chad Studvick
- Department of Chemistry The University of Akron Akron OH 44325–3601 USA
| | - Chao Liu
- College of Chemistry and Chemical Engineering Central South University Changsha 410083 Hunan P. R. China
| | - Yuan Xue
- Department of Chemistry The University of Akron Akron OH 44325–3601 USA
| | - Ivan A. Popov
- Department of Chemistry The University of Akron Akron OH 44325–3601 USA
| | - Zhong‐Ming Sun
- State Key Laboratory of Elemento-Organic Chemistry Tianjin Key Lab for Rare Earth Materials and Applications School of Materials Science and Engineering Nankai University Tianjin 300350 P. R. China
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8
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Huang Y, Xue Y, Muñoz‐Castro A, Popov IA, Sun Z. [Nb@Ge
13/14
]
3−
: New Family Members of Ge‐Based Intermetalloid Clusters. Chemistry 2022; 28:e202202192. [DOI: 10.1002/chem.202202192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Indexed: 11/12/2022]
Affiliation(s)
- Ya‐Shan Huang
- State Key Laboratory of Elemento-Organic Chemistry Tianjin Key Lab for Rare Earth Materials and Applications School of Materials Science and Engineering Nankai University Tianjin 300350 P.R. China
| | - Yuan Xue
- Department of Chemistry The University of Akron Akron OH 44325–3601 USA
| | - Alvaro Muñoz‐Castro
- Facultad de Ingeniería Arquitectura y Diseño Universidad San Sebastián Bellavista 7 Santiago 8420524 Chile
| | - Ivan A. Popov
- Department of Chemistry The University of Akron Akron OH 44325–3601 USA
| | - Zhong‐Ming Sun
- State Key Laboratory of Elemento-Organic Chemistry Tianjin Key Lab for Rare Earth Materials and Applications School of Materials Science and Engineering Nankai University Tianjin 300350 P.R. China
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9
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Aldrich KE, Popov IA, Root HD, Batista ER, Greer SM, Kozimor SA, Lilley LM, Livshits MY, Mocko V, Janicke MT, Scott BL, Stein BW, Yang P. Synthesis, solid-state, solution, and theoretical characterization of an "in-cage" scandium-NOTA complex. Dalton Trans 2022; 51:9994-10005. [PMID: 35739082 DOI: 10.1039/d1dt03887g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Developing chelators that strongly and selectively bind rare-earth elements (Sc, Y, La, and lanthanides) represents a longstanding fundamental challenge in inorganic chemistry. Solving these challenges is becoming more important because of increasing use of rare-earth elements in numerous technologies, ranging from paramagnets to luminescent materials. Within this context, we interrogated the complexation chemistry of the scandium(III) (Sc3+) trication with the hexadentate 1,4,7-triazacyclononane-1,4,7-triacetic acid (H3NOTA) chelator. This H3NOTA chelator is often regarded as an underperformer for complexing Sc3+. A common assumption is that metalation does not fully encapsulate Sc3+ within the NOTA3- macrocycle, leaving Sc3+ on the periphery of the chelate and susceptible to demetalation. Herein, we developed a synthetic approach that contradicted those assumptions. We confirmed that our procedure forced Sc3+ into the NOTA3- binding pocket by using single crystal X-ray diffraction to determine the Na[Sc(NOTA)(OOCCH3)] structure. Density functional theory (DFT) and 45Sc nuclear magnetic resonance (NMR) spectroscopy showed Sc3+ encapsulation was retained when the crystals were dissolved. Solution-phase and DFT studies revealed that [Sc(NOTA)(OOCCH3)]1- could accommodate an additional H2O capping ligand. Thermodynamic properties associated with the Sc-OOCCH3 and Sc-H2O capping ligand interactions demonstrated that these capping ligands occupied critical roles in stabilizing the [Sc(NOTA)] chelation complex.
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Affiliation(s)
| | - Ivan A Popov
- Los Alamos National Laboratory, Los Alamos, NM, USA. .,Department of Chemistry, The University of Akron, Akron, Ohio 44325-3601, USA
| | | | | | | | | | | | | | | | | | - Brian L Scott
- Los Alamos National Laboratory, Los Alamos, NM, USA.
| | | | - Ping Yang
- Los Alamos National Laboratory, Los Alamos, NM, USA.
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10
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Zhang B, Schrage BR, Frkonja-Kuczin A, Gaire S, Popov IA, Ziegler CJ, Boika A. Zwitterionic Ferrocenes: An Approach for Redox Flow Battery (RFB) Catholytes. Inorg Chem 2022; 61:8117-8120. [PMID: 35584531 DOI: 10.1021/acs.inorgchem.2c00722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein we present two new ferrocene compounds Fc3 and Fc4 with, respectively, propyl and butyl zwitterionic side chains. These compounds are highly soluble in water (0.66 M for Fc3 and 2.01 M for Fc4). When paired with anthraquinone-2,7-disulfonate as the anolyte, these zwitterionic ferrocenes exhibit excellent performance under neutral aqueous conditions. Voltage and energy efficiencies were ca. 88%, and the Coulombic efficiency was over 99% for both high-concentration redox flow batteries. We observed a difference in stability between the lengths of the zwitterionic chains, with Fc4 showing higher stability than Fc3, and the capacity decreased by ∼5% at the end of 20 cycles (∼1% per day). Density functional theory calculations revealed striking differences in the conformational properties between Fc3 and Fc4, with Fc4 retaining a linear structure of the side chain in solution, while Fc3 favored both linear and curved geometries.
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Affiliation(s)
- Baosen Zhang
- Department of Chemistry, University of Akron, Akron Ohio 44325-3601, United States
| | - Briana R Schrage
- Department of Chemistry, University of Akron, Akron Ohio 44325-3601, United States
| | | | - Sanjay Gaire
- Department of Chemistry, University of Akron, Akron Ohio 44325-3601, United States
| | - Ivan A Popov
- Department of Chemistry, University of Akron, Akron Ohio 44325-3601, United States
| | | | - Aliaksei Boika
- Department of Chemistry, University of Akron, Akron Ohio 44325-3601, United States
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11
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Popov IA, Billow BS, Carpenter SH, Batista ER, Boncella JM, Tondreau AM, Yang P. An Allyl Uranium(IV) Sandwich Complex: Are ϕ Bonding Interactions Possible? Chemistry 2022; 28:e202200114. [PMID: 35286723 PMCID: PMC9322041 DOI: 10.1002/chem.202200114] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Indexed: 01/08/2023]
Abstract
A method to explore head‐to‐head ϕ back‐bonding from uranium f‐orbitals into allyl π* orbitals has been pursued. Anionic allyl groups were coordinated to uranium with tethered anilide ligands, then the products were investigated by using NMR spectroscopy, single‐crystal XRD, and theoretical methods. The (allyl)silylanilide ligand, N‐((dimethyl)prop‐2‐enylsilyl)‐2,6‐diisopropylaniline (LH), was used as either the fully protonated, singly deprotonated, or doubly deprotonated form, thereby highlighting the stability and versatility of the silylanilide motif. A free, neutral allyl group was observed in UI2(L1)2 (1), which was synthesized by using the mono‐deprotonated ligand [K][N‐((dimethyl)prop‐2‐enyl)silyl)‐2,6‐diisopropylanilide] (L1). The desired homoleptic sandwich complex U[L2]2 (2) was prepared from all three ligand precursors, but the most consistent results came from using the dipotassium salt of the doubly deprotonated ligand [K]2[N‐((dimethyl)propenidesilyl)‐2,6‐diisopropylanilide] (L2). This allyl‐based sandwich complex was studied by using theoretical techniques with supporting experimental spectroscopy to investigate the potential for phi (ϕ) back‐bonding. The bonding between UIV and the allyl fragments is best described as ligand‐to‐metal electron donation from a two carbon fragment‐localized electron density into empty f‐orbitals.
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Affiliation(s)
- Ivan A. Popov
- Theoretical Division Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
- Current address: Department of Chemistry The University of Akron Akron Ohio 44325-3601 USA
| | - Brennan S. Billow
- Chemistry Division Los Alamos National Laboratory MS J514 Los Alamos New Mexico 87545 USA
| | - Stephanie H. Carpenter
- Chemistry Division Los Alamos National Laboratory MS J514 Los Alamos New Mexico 87545 USA
| | - Enrique R. Batista
- Theoretical Division Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - James M. Boncella
- Department of Chemistry Washington State University and Pacific Northwest National Laboratory Pullman Washington 99164
- 902 Batelle Blvd Richland Washington 99352 USA
| | - Aaron M. Tondreau
- Chemistry Division Los Alamos National Laboratory MS J514 Los Alamos New Mexico 87545 USA
| | - Ping Yang
- Theoretical Division Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
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12
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Rice NT, Popov IA, Carlson RK, Greer SM, Boggiano AC, Stein BW, Bacsa J, Batista ER, Yang P, La Pierre HS. Spectroscopic and electrochemical characterization of a Pr 4+ imidophosphorane complex and the redox chemistry of Nd 3+ and Dy 3+ complexes. Dalton Trans 2022; 51:6696-6706. [PMID: 35412547 DOI: 10.1039/d2dt00758d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The molecular tetravalent oxidation state for praseodymium is observed in solution via oxidation of the anionic trivalent precursor [K][Pr3+(NP(1,2-bis-tBu-diamidoethane)(NEt2))4] (1-Pr(NP*)) with AgI at -35 °C. The Pr4+ complex is characterized in solution via cyclic voltammetry, UV-vis-NIR electronic absorption spectroscopy, and EPR spectroscopy. Electrochemical analyses of [K][Ln3+(NP(1,2-bis-tBu-diamidoethane)(NEt2))4] (Ln = Nd and Dy) by cyclic voltammetry are reported and, in conjunction with theoretical modeling of electronic structure and oxidation potential, are indicative of principal ligand oxidations in contrast to the metal-centered oxidation observed for 1-Pr(NP*). The identification of a tetravalent praseodymium complex in in situ UV-vis and EPR experiments is further validated by theoretical modeling of the redox chemistry and the UV-vis spectrum. The latter study was performed by extended multistate pair-density functional theory (XMS-PDFT) and implicates a multiconfigurational ground state for the tetravalent praseodymium complex.
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Affiliation(s)
- Natalie T Rice
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, USA.
| | - Ivan A Popov
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA. .,Department of Chemistry, The University of Akron, Akron, OH 44325-3601, USA
| | - Rebecca K Carlson
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
| | - Samuel M Greer
- Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - Andrew C Boggiano
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, USA.
| | - Benjamin W Stein
- Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - John Bacsa
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, USA.
| | - Enrique R Batista
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
| | - Ping Yang
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
| | - Henry S La Pierre
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, USA. .,Nuclear and Radiological Engineering and Medical Physics Program, School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, USA
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13
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Xu HL, Tkachenko NV, Szczepanik DW, Popov IA, Muñoz-Castro A, Boldyrev AI, Sun ZM. Symmetry collapse due to the presence of multiple local aromaticity in Ge 244. Nat Commun 2022; 13:2149. [PMID: 35444180 PMCID: PMC9021308 DOI: 10.1038/s41467-022-29626-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Accepted: 03/15/2022] [Indexed: 11/09/2022] Open
Abstract
Understanding the structural changes taking place during the assembly of single atoms leading to the formation of atomic clusters and bulk materials remains challenging. The isolation and theoretical characterization of medium-sized clusters can shed light on the processes that occur during the transition to a solid-state structure. In this work, we synthesize and isolate a continuous 24-atom cluster Ge244−, which is characterized by X-ray diffraction analysis and Energy-dispersive X-ray spectroscopy, showing an elongated structural characteristic. Theoretical analysis reveals that electron delocalization plays a vital role in the formation and stabilization of the prolate cluster. In contrast with carbon atoms, 4 s orbitals of Ge-atoms do not easily hybridize with 4p orbitals and s-type lone-pairs can be localized with high occupancy. Thus, there are not enough electrons to form a stable symmetrical fullerene-like structure such as C24 fullerene. Three aromatic units with two [Ge9] and one [Ge6] species, connected by classical 2c-2e Ge-Ge σ-bonds, are aligned together forming three independent shielding cones and eventually causing a collapse of the global symmetry of the Ge244− cluster. Gaining insight on the structural transformations from atomic clusters to bulk materials is challenging. Here the authors synthesize a continuous cluster of germanium Ge244−, which can be viewed as two terminal Ge9 units bridged via a Ge6 central fragment, and characterize it by several techniques including X-ray diffraction; theoretical analysis indicates the presence of three aligned independent aromatic fragments.
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Affiliation(s)
- Hong-Lei Xu
- State Key Laboratory of Elemento-Organic Chemistry, Tianjin Key Lab of Rare Earth Materials and Applications, School of Materials Science and Engineering, Nankai University, Tianjin, China
| | - Nikolay V Tkachenko
- Department of Chemistry and Biochemistry, Utah State University, Logan, UT, USA
| | - Dariusz W Szczepanik
- Department of Theoretical Chemistry, Faculty of Chemistry, Jagiellonian University, Kraków, Poland
| | - Ivan A Popov
- Department of Chemistry, The University of Akron, Akron, OH, USA
| | - Alvaro Muñoz-Castro
- Grupo de Química Inorgánica y Materiales Moleculares, Facultad de Ingeniería, Universidad Autonoma de Chile, El Llano Subercaseaux, Santiago, Chile
| | - Alexander I Boldyrev
- Department of Chemistry and Biochemistry, Utah State University, Logan, UT, USA.
| | - Zhong-Ming Sun
- State Key Laboratory of Elemento-Organic Chemistry, Tianjin Key Lab of Rare Earth Materials and Applications, School of Materials Science and Engineering, Nankai University, Tianjin, China.
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14
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Tkachenko NV, Popov IA, Kulichenko M, Fedik N, Sun Z, Muñoz‐Castro A, Boldyrev AI. Bridging Aromatic/Antiaromatic Units: Recent Advances in Aromaticity and Antiaromaticity in Main‐Group and Transition‐Metal Clusters from Bonding and Magnetic Analyses. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100519] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Nikolay V. Tkachenko
- Department of Chemistry and Biochemistry Utah State University 0300 Old Main Hill 84322-0300 Logan UT USA
| | - Ivan A. Popov
- Theoretical Division Los Alamos National Laboratory 87545 Los Alamos NM USA
| | - Maksim Kulichenko
- Department of Chemistry and Biochemistry Utah State University 0300 Old Main Hill 84322-0300 Logan UT USA
| | - Nikita Fedik
- Department of Chemistry and Biochemistry Utah State University 0300 Old Main Hill 84322-0300 Logan UT USA
| | - Zhong‐Ming Sun
- Tianjin Key Lab of Rare Earth Materials and Applications State Key Laboratory of Elemento-Organic Chemistry School of Materials Science and Engineering Nankai University 300350 Tianjin China
| | - Alvaro Muñoz‐Castro
- Grupo de Química Inorgánica y Materiales Moleculares Facultad de Ingeniería Universidad Autonoma de Chile El Llano Subercaseaux 2801 Santiago Chile
| | - Alexander I. Boldyrev
- Department of Chemistry and Biochemistry Utah State University 0300 Old Main Hill 84322-0300 Logan UT USA
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15
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Xu YH, Tkachenko NV, Popov IA, Qiao L, Muñoz-Castro A, Boldyrev AI, Sun ZM. Ternary aromatic and anti-aromatic clusters derived from the hypho species [Sn 2Sb 5] 3. Nat Commun 2021; 12:4465. [PMID: 34294702 PMCID: PMC8298489 DOI: 10.1038/s41467-021-24706-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Accepted: 07/01/2021] [Indexed: 02/06/2023] Open
Abstract
Heterometallic clusters have attracted broad interests in the synthetic chemistry due to their various coordination modes and potential applications in heterogeneous catalysis. Here we report the synthesis, experimental, and theoretical characterizations of four ternary clusters ([M2(CO)6Sn2Sb5]3- (M = Cr, Mo), and [(MSn2Sb5)2]4-, (M = Cu, Ag)) in the process of capturing the hypho- [Sn2Sb5]3- in ethylenediamine (en) solution. We show that the coordination of the binary anion to transition-metal ions or fragments provides additional stabilization due to the formation of locally σ-aromatic units, producing a spherical aromatic shielding region in the cages. While in the case of [Mo2(CO)6Sn2Sb5]3- stabilization arises from locally σ-aromatic three-centre and five-centre two-electron bonds, aromatic islands in [(AgSn2Sb5)2]4- and [(CuSn2Sb5)2]4- render them globally antiaromatic. This work describes the coordination chemistry of the versatile building block [Sn2Sb5]3-, thus providing conceptual advances in the field of metal-metal bonding in clusters.
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Affiliation(s)
- Yu-He Xu
- grid.216938.70000 0000 9878 7032State Key Laboratory of Elemento-Organic Chemistry, Tianjin Key Lab for Rare Earth Materials and Applications, School of Materials Science and Engineering, Nankai University, Tianjin, China
| | - Nikolay V. Tkachenko
- grid.53857.3c0000 0001 2185 8768Department of Chemistry and Biochemistry, Utah State University, Logan, UT USA
| | - Ivan A. Popov
- grid.148313.c0000 0004 0428 3079Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM USA
| | - Lei Qiao
- grid.216938.70000 0000 9878 7032State Key Laboratory of Elemento-Organic Chemistry, Tianjin Key Lab for Rare Earth Materials and Applications, School of Materials Science and Engineering, Nankai University, Tianjin, China
| | - Alvaro Muñoz-Castro
- grid.441837.d0000 0001 0765 9762Grupo de Química Inorgánicay Materiales Moleculares, Facultad de Ingenieria, Universidad Autonoma de Chile, El Llano Subercaseaux, Santiago, Chile
| | - Alexander I. Boldyrev
- grid.53857.3c0000 0001 2185 8768Department of Chemistry and Biochemistry, Utah State University, Logan, UT USA
| | - Zhong-Ming Sun
- grid.216938.70000 0000 9878 7032State Key Laboratory of Elemento-Organic Chemistry, Tianjin Key Lab for Rare Earth Materials and Applications, School of Materials Science and Engineering, Nankai University, Tianjin, China
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16
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Popov IA, Shikhlyarova AI, Frantsiyants EM, Rostorguev EE, Engibaryan MA, Atmachidi DP, Kuznetsova NS, Kaplieva IV, Bandovkina VA, Cheryarina ND, Pandova OV. Alternative ways to improving the quality of life in combination treatment for high-grade glioma. J Clin Oncol 2021. [DOI: 10.1200/jco.2021.39.15_suppl.e14031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e14031 Background: The steady increase in the rates of high-grade gliomas (HGG) and poor results of antitumor therapy actualizes the problems of improving surgical and chemoradiation treatment, as well as accompanying therapy technologies for managing secondary disorders of neurological, cognitive, and adaptive status of neurooncological patients. Transcranial magnetotherapy (TMT) helps managing disorders of brain activity at the level of systemic and local regulation, including the mechanisms of formation of general anti-stress reactions of the body, as the basis for improving the quality of life. The purpose of the study was to improve the quality of life of patients with HGG receiving surgical and radiation treatment with TMT. Methods: Neurological and cognitive functions were analyzed in 50 patients with HGG after TMT (1 - ultra-low-frequency magnetic field on the projection of the hypothalamus, 0.3-3.0-9.0 Hz, induction 3 mT; 2 - pulsed magnetic field on the tumor bed, 0.3-3.0-9.0 Hz, induction 15 mT) in the early postoperative period and with radiation therapy, total boost dose 60 Gy, 30 fractions. The results were evaluated with the Bartel, Karnofsky, MoCA and NIHSS scales. Types of general adaptive reactions were identified according to the criteria of the cellular composition of blood by Garkavi. Results: 84% patients after TMT had no neurological symptoms (NIHSS scale), vs. 48% in controls. The number of patients without cognitive dysfunctions (MoCA scale) before radiation therapy was 3.4 times higher than the control values and exceeded them by 4.0 times after radiotherapy. Similar positive dynamics was observed when testing with the Bartel scale, with mild (88.0±4.7% vs. 45.5±10.6% in controls; p < 0.05) and moderate (12±6.5% vs. 45.5±10.6% in controls; p < 0.05) dependence on others in everyday life, and testing with the Karnofsky performance status in patients with the index 90 (60±7.1% in the main group vs. 27.3±9.5% in controls; p < 0.05), in which the symptoms of the disease were insignificant. A 3.4-fold decrease in the frequency of acute stress (S) development was registered, with increased coefficient (C) of antistress (AS) reactions (C = AS/S) by 3.0 times relative to the control values. Conclusions: Antistress mechanisms of the integral response to TMT involved neurological and cognitive recovery, contributing to early rehabilitation and improving the quality of life. The reported study was funded by RFBR, project number 19-315-90082\19.
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Affiliation(s)
- Ivan A. Popov
- National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation
| | - Alla I. Shikhlyarova
- National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation
| | | | - Eduard E. Rostorguev
- National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation
| | - Marina A. Engibaryan
- National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation
| | - Dmitriy P. Atmachidi
- National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation
| | | | - Irina V. Kaplieva
- National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation
| | | | | | - Olga V. Pandova
- National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation
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17
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Popov IA, Kit OI, Shikhlyarova AI, Frantsiyants EM, Rostorguev EE, Engibaryan MA, Timoshkina NN, Gusareva MA, Potemkin DS, Stasov VV, Arapova YY, Zhukova GV, Atmachidi DP, Nikitin ES, Kuznetsova NS, Pandova OV, Khatyushin VE. Assessment of low-intensity transcranial magnetic stimulation (TMS) in treatment for high-grade glioma (HGG). J Clin Oncol 2021. [DOI: 10.1200/jco.2021.39.15_suppl.e14027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e14027 Background: The existing modern standards of combination treatment of HGG patients do not provide recovery and a long-term favorable prognosis, and the increasong incidence of HGG determines the need for additional effective technologies for anticancer and decongestant therapy. One of such methods involves TMS, and we have reported its preliminary assessment earlier (DOI: 10.1200/JCO.2020.38.15_suppl.2545). In this study, we continued the observation to examine the survival of patients. Methods: Patients with HGG received combination treatment: stage 1 – surgical removal of tumors within visible unaltered tissues; stage 2 – radiation therapy (the Varian Novalis linear accelerator) to the bed of the removed tumor, single boost dose 2 Gy, total boost dose 60 Gy; stage 3 – multi-course chemotherapy: temozolomide 150 mg/m² on days 1-5 with a 23-day interval. Starting from the second day after surgery, patients of group 1 (n = 25) received 10 TMS sessions, and during radiotherapy – 15 TMS sessions. Patients of group 2 (n = 25) received combination treatment without TMS. 6 and 12 months after the surgery, survival of patients was assessed with the Kaplan-Meier method and the Log-Rank test. Results: After 6 months of the follow-up, the survival of patients in group 1 remained at 100%, while in the control group it decreased to 88.8±8.7%. The difference in the 1-year overall survival was even more pronounced: in group 1, it was 68.5±10.4%, exceeding the value in group 2 (52.0±7.5%.) The differences were statistically significant (Log-Rank test p = 0.001). Conclusions: The results confirm the effectiveness of accompanying TMS in the early postoperative period, as well as at the stage of radiation therapy. The undoubted effectiveness of the considered techniques makes it expedient to include this type of treatment in the combination therapy for HGG patients. The reported study was funded by RFBR, project number № 19-315-90082\19.
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Affiliation(s)
- Ivan A. Popov
- National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation
| | - Oleg I. Kit
- National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation
| | - Alla I. Shikhlyarova
- National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation
| | | | - Eduard E. Rostorguev
- National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation
| | - Marina A. Engibaryan
- National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation
| | | | - Marina A. Gusareva
- National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation
| | - Dmitrii S. Potemkin
- National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation
| | - Vitaliy V. Stasov
- National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation
| | - Yulia Yu. Arapova
- National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation
| | - Galina V. Zhukova
- National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation
| | - Dmitriy P. Atmachidi
- National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation
| | - Emzari S. Nikitin
- National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation
| | | | - Olga V. Pandova
- National Medical Research Centre for Oncology, Rostov-on-Don, Russian Federation
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18
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Bessen NP, Popov IA, Heathman CR, Grimes TS, Zalupski PR, Moreau LM, Smith KF, Booth CH, Abergel RJ, Batista ER, Yang P, Shafer JC. Complexation of Lanthanides and Heavy Actinides with Aqueous Sulfur-Donating Ligands. Inorg Chem 2021; 60:6125-6134. [PMID: 33866779 DOI: 10.1021/acs.inorgchem.1c00257] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The separation of trivalent lanthanides and actinides is challenging because of their similar sizes and charge densities. S-donating extractants have shown significant selectivity for trivalent actinides over lanthanides, with single-stage americium/lanthanide separation efficiencies for some thiol-based extractants reported at >99.999%. While such separations could transform the nuclear waste management landscape, these systems are often limited by the hydrolytic and radiolytic stability of the extractant. Progress away from thiol-based systems is limited by the poorly understood and complex interactions of these extractants in organic phases, where molecular aggregation and micelle formation obfuscates assessment of the metal-extractant coordination environment. Because S-donating thioethers are generally more resistant to hydrolysis and oxidation and the aqueous phase coordination chemistry is anticipated to lack complications brought on by micelle formation, we have considered three thioethers, 2,2'-thiodiacetic acid (TDA), (2R,5S)-tetrahydrothiophene-2,5-dicarboxylic acid, and 2,5-thiophenedicarboxylic acid (TPA), as possible trivalent actinide selective reagents. Formation constants, extended X-ray absorption fine structure spectroscopy, and computational studies were completed for thioether complexes with a variety of trivalent lanthanides and actinides including Nd, Eu, Tb, Am, Cm, Bk, and Cf. TPA was found to have moderately higher selectivity for the actinides because of its ability to bind actinides in a different manner than lanthanides, but the utility of TPA is limited by poor water solubility and high rigidity. While significant competition with water for the metal center limits the efficacy of aqueous-based thioethers for separations, the characterization of these solution-phase, S-containing lanthanide and actinide complexes is the most comprehensively available in the literature to date. This is due to the breadth of lanthanides and actinides considered as well as the techniques deployed and serves as a platform for the further development of S-containing reagents for actinide separations. Additionally, this paper reports on the first bond lengths for Cf and Bk with a neutral S donor.
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Affiliation(s)
- Nathan P Bessen
- Colorado School of Mines, 1500 Illinois Street, Golden, Colorado 80401, United States
| | - Ivan A Popov
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Colt R Heathman
- Idaho National Laboratory, 2525 Fremont Avenue, Idaho Falls, Idaho 83402, United States
| | - Travis S Grimes
- Idaho National Laboratory, 2525 Fremont Avenue, Idaho Falls, Idaho 83402, United States
| | - Peter R Zalupski
- Idaho National Laboratory, 2525 Fremont Avenue, Idaho Falls, Idaho 83402, United States
| | - Liane M Moreau
- Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Kurt F Smith
- Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Corwin H Booth
- Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Rebecca J Abergel
- Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, United States
| | - Enrique R Batista
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Ping Yang
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Jenifer C Shafer
- Colorado School of Mines, 1500 Illinois Street, Golden, Colorado 80401, United States
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19
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Palmer TC, Beamer A, Pitt T, Popov IA, Cammack CX, Pratt HD, Anderson TM, Batista ER, Yang P, Davis BL. A Comparative Review of Metal-Based Charge Carriers in Nonaqueous Flow Batteries. ChemSusChem 2021; 14:1213. [PMID: 33590699 DOI: 10.1002/cssc.202100152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Invited for this month's cover is the joint redox flow battery team from Sandia and Los Alamos National Laboratories. The cover image shows the stylized components of a redox flow battery (RFB) in the foreground, with renewable sources of energy generation in the background. The Review itself is available at 10.1002/cssc.202002354.
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Affiliation(s)
- Travis C Palmer
- Materials Synthesis and Integrated Devices, Los Alamos National Laboratory, 87545, Los Alamos, New Mexico, USA
| | - Andrew Beamer
- Materials Synthesis and Integrated Devices, Los Alamos National Laboratory, 87545, Los Alamos, New Mexico, USA
| | - Tristan Pitt
- Materials Synthesis and Integrated Devices, Los Alamos National Laboratory, 87545, Los Alamos, New Mexico, USA
| | - Ivan A Popov
- T-1: Physics and Chemistry of Materials, Los Alamos National Laboratory, 87545, Los Alamos, New Mexico, USA
| | - Claudina X Cammack
- Sandia National Laboratories, P.O. Box 5800, MS 0614, Albuquerque, New Mexico, USA
| | - Harry D Pratt
- Sandia National Laboratories, P.O. Box 5800, MS 0614, Albuquerque, New Mexico, USA
| | - Travis M Anderson
- Sandia National Laboratories, P.O. Box 5800, MS 0614, Albuquerque, New Mexico, USA
| | - Enrique R Batista
- T-CNLS: Center for Nonlinear Studies, Los Alamos National Laboratory, 87545, Los Alamos, New Mexico, USA
| | - Ping Yang
- T-CNLS: Center for Nonlinear Studies, Los Alamos National Laboratory, 87545, Los Alamos, New Mexico, USA
| | - Benjamin L Davis
- Materials Synthesis and Integrated Devices, Los Alamos National Laboratory, 87545, Los Alamos, New Mexico, USA
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20
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Palmer TC, Beamer A, Pitt T, Popov IA, Cammack CX, Pratt HD, Anderson TM, Batista ER, Yang P, Davis BL. A Comparative Review of Metal-Based Charge Carriers in Nonaqueous Flow Batteries. ChemSusChem 2021; 14:1214-1228. [PMID: 33305517 DOI: 10.1002/cssc.202002354] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 12/09/2020] [Indexed: 06/12/2023]
Abstract
Energy storage is becoming the chief barrier to the utilization of more renewable energy sources on the grid. With independent service operators aiming to acquire gigawatts in the next 10-20 years, there is a large need to develop a suite of new storage technologies. Redox flow batteries (RFB) may be part of the solution if certain key barriers are overcome. This Review focuses on a particular kind of RFB based on nonaqueous media that promises to meet the challenge through higher voltages than the organic and aqueous variants. This class of RFB is divided into three groups: molecular, macromolecular, and redox-targeted systems. The growing field of theoretical modeling is also reviewed and discussed.
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Affiliation(s)
- Travis C Palmer
- Materials Synthesis and Integrated Devices, Los Alamos National Laboratory, 87545, Los Alamos, New Mexico, USA
| | - Andrew Beamer
- Materials Synthesis and Integrated Devices, Los Alamos National Laboratory, 87545, Los Alamos, New Mexico, USA
| | - Tristan Pitt
- Materials Synthesis and Integrated Devices, Los Alamos National Laboratory, 87545, Los Alamos, New Mexico, USA
| | - Ivan A Popov
- T-1: Physics and Chemistry of Materials, Los Alamos National Laboratory, 87545, Los Alamos, New Mexico, USA
| | - Claudina X Cammack
- Sandia National Laboratories, P.O. Box 5800, MS 0614, Albuquerque, New Mexico, USA
| | - Harry D Pratt
- Sandia National Laboratories, P.O. Box 5800, MS 0614, Albuquerque, New Mexico, USA
| | - Travis M Anderson
- Sandia National Laboratories, P.O. Box 5800, MS 0614, Albuquerque, New Mexico, USA
| | - Enrique R Batista
- T-CNLS: Center for Nonlinear Studies, Los Alamos National Laboratory, 87545, Los Alamos, New Mexico, USA
| | - Ping Yang
- T-CNLS: Center for Nonlinear Studies, Los Alamos National Laboratory, 87545, Los Alamos, New Mexico, USA
| | - Benjamin L Davis
- Materials Synthesis and Integrated Devices, Los Alamos National Laboratory, 87545, Los Alamos, New Mexico, USA
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21
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Pekov SI, Sorokin AA, Kuzin AA, Bocharov KV, Bormotov DS, Shivalin AS, Shurkhay VA, Potapov AA, Nikolaev EN, Popov IA. [Analysis of phosphatidylcholines alterations in human glioblastoma multiform tissues ex vivo]. Biomed Khim 2021; 67:81-87. [PMID: 33645525 DOI: 10.18097/pbmc20216701081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Significant metabolism alteration is accompanying the cell malignization process. Energy metabolism disturbance leads to the activation of de novo synthesis and beta-oxidation processes of lipids and fatty acids in a cancer cell, which becomes an indicator of pathological processes inside the cell. The majority of studies dealing with lipid metabolism alterations in glial tumors are performed using the cell lines in vitro or animal models. However, such conditions do not entirely represent the physiological conditions of cell growth or possible cells natural variability. This work presents the results of the data obtained by applying ambient mass spectrometry to human glioblastoma multiform tissues. By analyzing a relatively large cohort of primary and secondary glioblastoma samples, we identify the alterations in cells lipid composition, which accompanied the development of grade IV brain tumors. We demonstrate that primary glioblastomas, as well as ones developed from astrocytomas, are enriched with mono- and diunsaturated phosphatidylcholines (PC 26:1, 30:2, 32:1, 32:2, 34:1, 34:2). Simultaneously, the saturated and polyunsaturated phosphatidylcholines and phosphatidylethanolamines decrease. These alterations are obviously linked to the availability of the polyunsaturated fatty acids and activation of the de novo lipid synthesis and beta-oxidation pathways under the anaerobic conditions in the tumor core.
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Affiliation(s)
- S I Pekov
- Skolkovo Institute of Science and Technology, Moscow, Russia; Moscow Institute of Physics and Technology (National Research University), Moscow, Russia
| | - A A Sorokin
- Moscow Institute of Physics and Technology (National Research University), Moscow, Russia
| | - A A Kuzin
- Moscow Institute of Physics and Technology (National Research University), Moscow, Russia
| | - K V Bocharov
- Semenov Federal Center of Chemical Physic of RAS, Moscow, Russia
| | - D S Bormotov
- Moscow Institute of Physics and Technology (National Research University), Moscow, Russia
| | - A S Shivalin
- Moscow Institute of Physics and Technology (National Research University), Moscow, Russia
| | - V A Shurkhay
- Moscow Institute of Physics and Technology (National Research University), Moscow, Russia; N.N. Burdenko National Medical Research Center of Neurosurgery, Moscow, Russia
| | - A A Potapov
- N.N. Burdenko National Medical Research Center of Neurosurgery, Moscow, Russia
| | - E N Nikolaev
- Skolkovo Institute of Science and Technology, Moscow, Russia
| | - I A Popov
- Moscow Institute of Physics and Technology (National Research University), Moscow, Russia
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22
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Zhvansky ES, Sorokin AA, Bormotov DS, Bocharov KV, Zavorotnyuk DS, Ivanov DG, Nikolaev EN, Popov IA. The software for interactive evaluation of mass spectra stability and reproducibility. Bioinformatics 2020; 37:140-142. [PMID: 33367588 DOI: 10.1093/bioinformatics/btaa1072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 11/25/2020] [Accepted: 12/15/2020] [Indexed: 11/13/2022] Open
Abstract
SUMMARY Mass spectrometry methods are widely used for the analysis of biological and medical samples. Recently developed methods such as DESI, REIMS, NESI allow fast analyses without sample preparation at the cost of higher variability of spectra. In biology and medicine, MS profiles are often used with machine learning (classification, regression, etc.) algorithms and statistical analysis, which are sensitive to outliers and intraclass variability. Here we present SSM Display software, a tool for fast visual outlier detection and variance estimation in mass spectrometric profiles. The tool speeds up the process of manual spectra inspection, improves accuracy and explainability of outlier detection, and decreases the requirements to the operator experience. It was shown that the batch effect could be revealed through SSM analysis and that the SSM calculation can also be used for tuning novel ion sources concerning the quality of obtained mass spectra. AVAILABILITY Source code, example datasets, binaries, and other information are available at https://github.com/EvgenyZhvansky/R_matrix. SUPPLEMENTARY INFORMATION Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- E S Zhvansky
- Dolgoprudny, Moscow Institute of Physics and Technology, Russia
| | - A A Sorokin
- Dolgoprudny, Moscow Institute of Physics and Technology, Russia
| | - D S Bormotov
- Dolgoprudny, Moscow Institute of Physics and Technology, Russia
| | - K V Bocharov
- Dolgoprudny, Moscow Institute of Physics and Technology, Russia
| | - D S Zavorotnyuk
- Dolgoprudny, Moscow Institute of Physics and Technology, Russia
| | - D G Ivanov
- Dolgoprudny, Moscow Institute of Physics and Technology, Russia.,Emanuel Institute for Biochemical Physics of the Russian Academy of Sciences, Moscow, Russia
| | - E N Nikolaev
- Skolkovo Institute of Science and Technology, Moscow, Russia
| | - I A Popov
- Dolgoprudny, Moscow Institute of Physics and Technology, Russia
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23
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Eliferov VA, Zhvansky ES, Sorokin AA, Shurkhay VA, Bormotov DS, Pekov SI, Nikitin PV, Ryzhova MV, Kulikov EE, Potapov AA, Nikolaev EN, Popov IA. [The role of lipids in the classification of astrocytoma and glioblastoma using MS tumor profiling]. Biomed Khim 2020; 66:317-325. [PMID: 32893821 DOI: 10.18097/pbmc20206604317] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Express MS identification of biological tissues has become a much more accessible research method due to the application of direct specimen ionization at atmospheric pressure. In contrast to traditional methods of analysis employing GC-MS methods for determining the molecular composition of the analyzed objects it eliminates the influence of mutual ion suppression. Despite significant progress in the field of direct MS of biological tissues, the question of mass spectrometric profile attribution to a certain type of tissue still remains open. The use of modern machine learning methods and protocols (e.g., "random forests") enables us to trace possible relationships between the components of the sample MS profile and the result of brain tumor tissue classification (astrocytoma or glioblastoma). It has been shown that the most pronounced differences in the mass spectrometric profiles of these tumors are due to their lipid composition. Detection of statistically significant differences in lipid profiles of astrocytoma and glioblastoma may be used to perform an express test during surgery and inform the neurosurgeon what type of malignant tissue he is working with. The ability to accurately determine the boundaries of the neoplastic growth significantly improves the quality of both surgical intervention and postoperative rehabilitation, as well as the duration and quality of life of patients.
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Affiliation(s)
- V A Eliferov
- Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Russia
| | - E S Zhvansky
- Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Russia
| | - A A Sorokin
- Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Russia
| | - V A Shurkhay
- N.N. Burdenko National Medical Research Center of Neurosurgery, Moscow, Russia
| | - D S Bormotov
- Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Russia
| | - S I Pekov
- Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Russia
| | - P V Nikitin
- N.N. Burdenko National Medical Research Center of Neurosurgery, Moscow, Russia
| | - M V Ryzhova
- N.N. Burdenko National Medical Research Center of Neurosurgery, Moscow, Russia
| | - E E Kulikov
- Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Russia; Federal Research Center "Fundamentals of Biotechnology", RAS, Moscow, Russia
| | - A A Potapov
- N.N. Burdenko National Medical Research Center of Neurosurgery, Moscow, Russia
| | - E N Nikolaev
- Skolkovo Institute of Science and Technology, Moscow, Russia
| | - I A Popov
- Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Russia
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24
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Xu H, Popov IA, Tkachenko NV, Wang Z, Muñoz‐Castro A, Boldyrev AI, Sun Z. σ‐Aromaticity‐Induced Stabilization of Heterometallic Supertetrahedral Clusters [Zn
6
Ge
16
]
4−
and [Cd
6
Ge
16
]
4−. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008276] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Hong‐Lei Xu
- Tianjin Key Lab of Rare Earth Materials and Applications State Key Laboratory of Elemento-Organic Chemistry School of Materials Science and Engineering Nankai University Tianjin 300350 China
| | - Ivan A. Popov
- Theoretical Division Los Alamos National Laboratory Los Alamos NM 87545 USA
| | - Nikolay V. Tkachenko
- Department of Chemistry and Biochemistry Utah State University 0300 Old Main Hill Logan UT 84322-0300 USA
| | - Zi‐Chuan Wang
- Tianjin Key Lab of Rare Earth Materials and Applications State Key Laboratory of Elemento-Organic Chemistry School of Materials Science and Engineering Nankai University Tianjin 300350 China
| | - Alvaro Muñoz‐Castro
- Grupo de Química Inorgánicay Materiales Moleculares Facultad de Ingenieria Universidad Autonoma de Chile El Llano Subercaseaux Santiago 2801 Chile
| | - Alexander I. Boldyrev
- Department of Chemistry and Biochemistry Utah State University 0300 Old Main Hill Logan UT 84322-0300 USA
| | - Zhong‐Ming Sun
- Tianjin Key Lab of Rare Earth Materials and Applications State Key Laboratory of Elemento-Organic Chemistry School of Materials Science and Engineering Nankai University Tianjin 300350 China
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25
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Xu H, Popov IA, Tkachenko NV, Wang Z, Muñoz‐Castro A, Boldyrev AI, Sun Z. σ‐Aromaticity‐Induced Stabilization of Heterometallic Supertetrahedral Clusters [Zn
6
Ge
16
]
4−
and [Cd
6
Ge
16
]
4−. Angew Chem Int Ed Engl 2020; 59:17286-17290. [DOI: 10.1002/anie.202008276] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Indexed: 11/08/2022]
Affiliation(s)
- Hong‐Lei Xu
- Tianjin Key Lab of Rare Earth Materials and Applications State Key Laboratory of Elemento-Organic Chemistry School of Materials Science and Engineering Nankai University Tianjin 300350 China
| | - Ivan A. Popov
- Theoretical Division Los Alamos National Laboratory Los Alamos NM 87545 USA
| | - Nikolay V. Tkachenko
- Department of Chemistry and Biochemistry Utah State University 0300 Old Main Hill Logan UT 84322-0300 USA
| | - Zi‐Chuan Wang
- Tianjin Key Lab of Rare Earth Materials and Applications State Key Laboratory of Elemento-Organic Chemistry School of Materials Science and Engineering Nankai University Tianjin 300350 China
| | - Alvaro Muñoz‐Castro
- Grupo de Química Inorgánicay Materiales Moleculares Facultad de Ingenieria Universidad Autonoma de Chile El Llano Subercaseaux Santiago 2801 Chile
| | - Alexander I. Boldyrev
- Department of Chemistry and Biochemistry Utah State University 0300 Old Main Hill Logan UT 84322-0300 USA
| | - Zhong‐Ming Sun
- Tianjin Key Lab of Rare Earth Materials and Applications State Key Laboratory of Elemento-Organic Chemistry School of Materials Science and Engineering Nankai University Tianjin 300350 China
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26
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Rice NT, Popov IA, Russo DR, Gompa TP, Ramanathan A, Bacsa J, Batista ER, Yang P, La Pierre HS. Comparison of tetravalent cerium and terbium ions in a conserved, homoleptic imidophosphorane ligand field. Chem Sci 2020; 11:6149-6159. [PMID: 32832060 PMCID: PMC7422963 DOI: 10.1039/d0sc01414a] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Accepted: 05/16/2020] [Indexed: 01/10/2023] Open
Abstract
A redox pair of Ce4+ and Ce3+ complexes has been prepared that is stabilized by the [(NP(1,2-bis- t Bu-diamidoethane)(NEt2))]1- ligand. Since these complexes are isostructural to the recently reported isovalent terbium analogs, a detailed structural and spectroscopic comparative analysis was pursued via Voronoi-Dirichlet polyhedra analysis, UV-vis-NIR, L3-edge X-ray absorption near edge spectroscopy (XANES), cyclic voltammetry, and natural transitions orbital (NTO) analysis and natural bond orbital (NBO) analysis. The electrochemical studies confirm previous theoretical studies of the redox properties of the related complex [K][Ce3+(NP(pip)3)4] (pip = piperidinyl), 1-Ce(PN). Complex 1-Ce(PN*) presents the most negative E pc of -2.88 V vs. Fc/Fc+ in THF of any cerium complex studied electrochemically. Likewise 1-Tb(PN*) has the most negative E pc for electrochemically interrogated terbium complexes at -1.79 V vs. Fc/Fc+ in THF. Complexes 1-Ce(PN*) and 2-Ce(PN*) were also studied by L3-edge X-ray absorption near edges spectroscopy (XANES) and a comparison to previously reported spectra for 1-Tb(PN*), 2-Tb(PN*), 1-Ce(PN), and, [Ce4+(NP(pip)3)4], 2-Ce(PN), demonstrates similar n f values for all the tetravalent lanthanide complexes. According to the natural bond orbital analysis, a greater covalent character of the M-L bonds is found in 2-Ce(PN*) than in 1-Ce(PN*), in agreement with the shorter Ce-N bonds in the tetravalent counterpart. The greater contribution of Ce orbitals in the Ce-N bonding and, specifically, the higher participation of 4f electrons accounts for the stronger covalent interactions in 2-Ce(PN*) as compared to 2-Tb(PN*).
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Affiliation(s)
- Natalie T Rice
- School of Chemistry and Biochemistry , Georgia Institute of Technology , Atlanta , Georgia 30332-0400 , USA .
| | - Ivan A Popov
- Theoretical Division , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , USA . ;
| | - Dominic R Russo
- School of Chemistry and Biochemistry , Georgia Institute of Technology , Atlanta , Georgia 30332-0400 , USA .
| | - Thaige P Gompa
- School of Chemistry and Biochemistry , Georgia Institute of Technology , Atlanta , Georgia 30332-0400 , USA .
| | - Arun Ramanathan
- School of Chemistry and Biochemistry , Georgia Institute of Technology , Atlanta , Georgia 30332-0400 , USA .
| | - John Bacsa
- School of Chemistry and Biochemistry , Georgia Institute of Technology , Atlanta , Georgia 30332-0400 , USA .
| | - Enrique R Batista
- Theoretical Division , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , USA . ;
| | - Ping Yang
- Theoretical Division , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , USA . ;
| | - Henry S La Pierre
- School of Chemistry and Biochemistry , Georgia Institute of Technology , Atlanta , Georgia 30332-0400 , USA .
- Nuclear and Radiological Engineering and Medical Physics Program , School of Mechanical Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332-0400 , USA
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27
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Fedik N, Mu C, Popov IA, Wang W, Wang J, Wang H, Bowen KH, Boldyrev AI, Zhang X. Boron‐Made N
2
: Realization of a B≡B Triple Bond in the B
2
Al
3
−
Cluster. Chemistry 2020; 26:8017-8021. [DOI: 10.1002/chem.202001159] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 04/05/2020] [Indexed: 01/23/2023]
Affiliation(s)
- Nikita Fedik
- Department of Chemistry and Biochemistry Utah State University 0300 Old Main Hill Logan UT 84322-0300 USA
| | - Chaonan Mu
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of, Education) Renewable Energy Conversion and Storage Center (ReCAST) College of Chemistry Nankai University Tianjin 300071 P. R. China
| | - Ivan A. Popov
- Theoretical Division Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Wei Wang
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of, Education) Renewable Energy Conversion and Storage Center (ReCAST) College of Chemistry Nankai University Tianjin 300071 P. R. China
| | - Jie Wang
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of, Education) Renewable Energy Conversion and Storage Center (ReCAST) College of Chemistry Nankai University Tianjin 300071 P. R. China
| | - Haopeng Wang
- Departments of Chemistry and Material Science Johns Hopkins University Baltimore MD 21218 USA
| | - Kit H. Bowen
- Departments of Chemistry and Material Science Johns Hopkins University Baltimore MD 21218 USA
| | - Alexander I. Boldyrev
- Department of Chemistry and Biochemistry Utah State University 0300 Old Main Hill Logan UT 84322-0300 USA
| | - Xinxing Zhang
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of, Education) Renewable Energy Conversion and Storage Center (ReCAST) College of Chemistry Nankai University Tianjin 300071 P. R. China
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28
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Popov IA, Kit OI, Shikhlyarova AI, Frantsiyants EM, Rostorguev EE, Atmachidi DP, Timoshkina NN, Gusareva MA, Potemkin DS, Stasov VV, Arapova YY, Protasova TP, Zhukova GV, Kavitskiy SE, Ignatov SN, Cherkiev IU, Nikitin ES, Kuznetsova NS. Preliminary assessment of low-intensity transcranial magnetic stimulation (TMS) during the treatment for brain glioblastomas. J Clin Oncol 2020. [DOI: 10.1200/jco.2020.38.15_suppl.2545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
2545 Background: The standard treatment of malignant brain gliomas, including surgical and radiation therapies, does not provide recovery and a long-time favorable prognosis. The development of technologies and international guidelines on the introduction of electric (TTF) and electromagnetic (TMS) fields in combination treatment for glioblastomas aims to improve immediate results, as shown in experiments on human glioblastoma cell culture. The TMS protocol requires further refinement in parameters of frequency, intensity, and exposure with an assessment of the immediate results of combined treatment. Methods: The study included 60 patients diagnosed with MBG receiving osteoplastic craniotomy with radical (within visible unchanged tissues) tumor removal. Starting from the second day after the surgery, patients of group 1 (n = 30) received 10 sessions of magnetotherapy in the double exposure mode. For the first morning exposure, we used an ultra-low-frequency magnetic field (ULFMF) (0.03 to 9.0 Hz) on the hypothalamus projection area to induce a general antistress reaction. After 2.5-3 hours, local (on the surgical site) TMS exposure with the Neuro-MSD system (Russia) was applied in the pulse algorithm, up to 1 GHz and 5 Hz, 15 mT, 3 min. The induction was reduced exponentially (C = 0.8). The control group 2 (n = 30) did not receive ULFMF or TMS. Magnetic resonance imaging (MRI) was used to determine the volume of tumors (Vt, cm3) and perifocal edema (Ve, cm3) calculated according to the Shrek’s formula for an ellipsoid (V = a×b×c×π/6). Results: Before surgery, Vt = 54.7±5.7cm3 in group 1, in group 2 - Vt = 60.9±8.5cm3 (no statistical differences). After surgery and the subsequent course of ULFMF and TMS, residual tumor volumes in group 1 were 2.5 times lower than in controls (p < 0.05). The difference between Ve values before and after treatment was on average 80.7 cm3 in group 1 and 41.8 cm3 in group 2 (p < 0.05). Conclusions: The inclusion of sequential ULFMF and TMS exposures into postoperative therapy for gliomas, taking into account various vectors of the influence on the projection of centers of homeostasis regulation and the surgical field, as well as the development of programmed modes of biotropic exposure parameters, improves antitumor and anti-edematous effects.
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Affiliation(s)
- Ivan A. Popov
- Rostov Research Institute of Oncology, Rostov-on-Don, Russian Federation
| | - Oleg I. Kit
- Rostov Research Institute of Oncology, Rostov-on-Don, Russian Federation
| | | | | | | | | | | | - Marina A. Gusareva
- Rostov Research Institute of Oncology, Rostov-on-Don, Russian Federation
| | | | - Vitaliy V. Stasov
- Rostov Research Institute of Oncology, Rostov-on-Don, Russian Federation
| | - Yulia Yu. Arapova
- Rostov Research Institute of Oncology, Rostov-on-Don, Russian Federation
| | | | - Galina V. Zhukova
- Rostov Research Institute of Oncology, Rostov-on-Don, Russian Federation
| | | | - Sergey N. Ignatov
- Rostov Research Institute of Oncology, Rostov-on-Don, Russian Federation
| | - Islam U. Cherkiev
- Rostov Research Institute of Oncology, Rostov-on-Don, Russian Federation
| | - Emzari S. Nikitin
- Rostov Research Institute of Oncology, Rostov-on-Don, Russian Federation
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29
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Abstract
In all known examples of metal-ligand (M-L) δ and φ bonds, the metal orbitals are aligned to the ligand orbitals in a "head-to-head" or "side-to-head" fashion. Here, we report two fundamentally new types of M-L δ and φ interactions; "head-to-side" δ and "side-to-side" φ back-bonding, found in complexes of metallacyclopropenes and metallacyclocumulenes of actinides (Pa-Pu) that makes them distinct from their corresponding Group 4 analogues. In addition to the known Th and U complexes, our calculations include complexes of Pa, Np, and Pu. In contrast with conventional An-C bond decreasing, due to the actinide contraction, the An-C distance increases from Pa to Pu. We demonstrate that the direct L-An σ and π donations combined with the An-L δ or φ back-donations are crucial in explaining this non-classical trend of the An-L bond lengths in both series, underscoring the significance of these δ/φ back-donation interactions, and their importance for complexes of Pa and U in particular.
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Affiliation(s)
- Morgan P Kelley
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA
| | - Ivan A Popov
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA
| | - Julie Jung
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA
| | - Enrique R Batista
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA.
| | - Ping Yang
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA.
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30
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Rice NT, Popov IA, Russo DR, Bacsa J, Batista ER, Yang P, Telser J, La Pierre HS. Design, Isolation, and Spectroscopic Analysis of a Tetravalent Terbium Complex. J Am Chem Soc 2019; 141:13222-13233. [DOI: 10.1021/jacs.9b06622] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
| | - Ivan A. Popov
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | | | | | - Enrique R. Batista
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Ping Yang
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Joshua Telser
- Department of Biological, Physical and Health Science, Roosevelt University, Chicago, Illinois 60605, United States
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31
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Liu C, Tkachenko NV, Popov IA, Fedik N, Min X, Xu C, Li J, McGrady JE, Boldyrev AI, Sun Z. Inside Cover: Structure and Bonding in [Sb@In
8
Sb
12
]
3−
and [Sb@In
8
Sb
12
]
5−
(Angew. Chem. Int. Ed. 25/2019). Angew Chem Int Ed Engl 2019. [DOI: 10.1002/anie.201905963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Chao Liu
- School of Materials Science and EngineeringState Key Laboratory of Elemento-Organic ChemistryTianjin Key Lab for Rare Earth Materials and ApplicationsCentre for Rare earth and inorganic functional materialsNankai University Tianjin 300350 China
- College of Chemistry and Chemical EngineeringCentral South University Changsha 410083 Hunan P. R. China
| | - Nikolay V. Tkachenko
- Department of Chemistry and BiochemistryUtah State University 0300, Old Main Hill Logan Utah 84322-0300 USA
| | - Ivan A. Popov
- Theoretical DivisionLos Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Nikita Fedik
- Department of Chemistry and BiochemistryUtah State University 0300, Old Main Hill Logan Utah 84322-0300 USA
| | - Xue Min
- State Key Laboratory of Rare Earth Resource UtilizationChangchun Institute of Applied ChemistryChinese Academy of Sciences 5625 Renmin Street Changchun Jilin 130022 China
| | - Cong‐Qiao Xu
- Department of Chemistry and Key Laboratory of OrganicOptoelectronics & Molecular Engineering of Ministry of EducationTsinghua University Beijing 100084 China
| | - Jun Li
- Department of Chemistry and Key Laboratory of OrganicOptoelectronics & Molecular Engineering of Ministry of EducationTsinghua University Beijing 100084 China
| | - John E. McGrady
- Department of ChemistryUniversity of Oxford South Parks Road Oxford OX1 3QZ UK
| | - Alexander I. Boldyrev
- Department of Chemistry and BiochemistryUtah State University 0300, Old Main Hill Logan Utah 84322-0300 USA
| | - Zhong‐Ming Sun
- School of Materials Science and EngineeringState Key Laboratory of Elemento-Organic ChemistryTianjin Key Lab for Rare Earth Materials and ApplicationsCentre for Rare earth and inorganic functional materialsNankai University Tianjin 300350 China
- State Key Laboratory of Rare Earth Resource UtilizationChangchun Institute of Applied ChemistryChinese Academy of Sciences 5625 Renmin Street Changchun Jilin 130022 China
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32
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Liu C, Tkachenko NV, Popov IA, Fedik N, Min X, Xu C, Li J, McGrady JE, Boldyrev AI, Sun Z. Structure and Bonding in [Sb@In
8
Sb
12
]
3−
and [Sb@In
8
Sb
12
]
5−. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201905963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Chao Liu
- School of Materials Science and EngineeringState Key Laboratory of Elemento-Organic ChemistryTianjin Key Lab for Rare Earth Materials and ApplicationsCentre for Rare earth and inorganic functional materialsNankai University Tianjin 300350 China
- College of Chemistry and Chemical EngineeringCentral South University Changsha 410083 Hunan P. R. China
| | - Nikolay V. Tkachenko
- Department of Chemistry and BiochemistryUtah State University 0300, Old Main Hill Logan Utah 84322-0300 USA
| | - Ivan A. Popov
- Theoretical DivisionLos Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Nikita Fedik
- Department of Chemistry and BiochemistryUtah State University 0300, Old Main Hill Logan Utah 84322-0300 USA
| | - Xue Min
- State Key Laboratory of Rare Earth Resource UtilizationChangchun Institute of Applied ChemistryChinese Academy of Sciences 5625 Renmin Street Changchun Jilin 130022 China
| | - Cong‐Qiao Xu
- Department of Chemistry and Key Laboratory of OrganicOptoelectronics & Molecular Engineering of Ministry of EducationTsinghua University Beijing 100084 China
| | - Jun Li
- Department of Chemistry and Key Laboratory of OrganicOptoelectronics & Molecular Engineering of Ministry of EducationTsinghua University Beijing 100084 China
| | - John E. McGrady
- Department of ChemistryUniversity of Oxford South Parks Road Oxford OX1 3QZ UK
| | - Alexander I. Boldyrev
- Department of Chemistry and BiochemistryUtah State University 0300, Old Main Hill Logan Utah 84322-0300 USA
| | - Zhong‐Ming Sun
- School of Materials Science and EngineeringState Key Laboratory of Elemento-Organic ChemistryTianjin Key Lab for Rare Earth Materials and ApplicationsCentre for Rare earth and inorganic functional materialsNankai University Tianjin 300350 China
- State Key Laboratory of Rare Earth Resource UtilizationChangchun Institute of Applied ChemistryChinese Academy of Sciences 5625 Renmin Street Changchun Jilin 130022 China
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33
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Popov IA, Shikhlyarova AI, Kit OI, Rostorguev EE, Gusareva MA, Timoshkina NN, Potemkin DS, Atmachidi DP, Rozenko LY, Zinkovich MS, Zhukova GV. Lethality and mitotic activity of T98G glioblastoma cells under the influence of pulsed magnetic fields and ionizing radiation. J Clin Oncol 2019. [DOI: 10.1200/jco.2019.37.15_suppl.e13511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e13511 Background: Development of alternative methods of non-invasive therapy in neurooncology is determined by the need to prevent the continued growth of glioblastoma and radiation-induced complications. Usage of electromagnetic influence for these reasons is determined by the oscillatory nature of intracellular processes and results of previous studies on the effect of weak electromagnetic radiation in tumor growth. The purpose of the study was to reveal the effect of a pulsed magnetic field (PMF) and ionizing radiation (IR) on human T98G glioblastoma cells. Methods: Human T98G glioblastoma cells were cultured in the RPMI-1640 medium (Biolot, Russia) supplemented with 10% fetal bovine serum (Thermo Scientific HyClone, USA). The culture was seeded in the Biofil plates (at least 8x105 cells per 3 mL of the medium), incubated (CB 150 Binder, Germany) and exposed to IR 10 Gy (TheratronEquinox-BestTheratronics) for 11.7 min. and/or PMF 15 mT or 300 mT with a sequence of frequencies 0.3-3.0-9.0 Hz for 7 min. (Neiro-MS/D by Neirosoft, Russia). The efficiency criteria were lethality and the mitotic activity of human T98G glioblastoma cells. Results: The highest cellular lethality was registered 3 hours (18.7 vs. 5.2% in controls, p≤0.05) and a day after IR exposure. PMF 15 or 300 mT alone increased lethality by 2.5-2.8 times compared to controls (p < 0.05). IR plus PMF (15 mT) did not caused increased lethality. At the same time, the most pronounced decrease in the mitotic activity a day after exposure (by 4.7 times, p < 0.05) was registered in PMF alone (15 mT). Conclusions: The inhibitory effect of PMF on the viability of human glioblastoma cells indicates the prospects for its use as an accompanying treatment in neurooncology.
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Affiliation(s)
- Ivan A. Popov
- Rostov Research Institute of Oncology, Rostov-on-Don, Russian Federation
| | | | - Oleg I. Kit
- Rostov Research Institute of Oncology, Rostov-on-Don, Russian Federation
| | | | - Marina A. Gusareva
- Rostov Research Institute of Oncology, Rostov-on-Don, Russian Federation
| | | | | | | | | | | | - Galina V. Zhukova
- Rostov Research Institute of Oncology, Rostov-on-Don, Russian Federation
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34
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Liu C, Tkachenko NV, Popov IA, Fedik N, Min X, Xu C, Li J, McGrady JE, Boldyrev AI, Sun Z. Structure and Bonding in [Sb@In
8
Sb
12
]
3−
and [Sb@In
8
Sb
12
]
5−. Angew Chem Int Ed Engl 2019; 58:8367-8371. [DOI: 10.1002/anie.201904109] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Chao Liu
- School of Materials Science and Engineering State Key Laboratory of Elemento-Organic Chemistry Tianjin Key Lab for Rare Earth Materials and Applications Centre for Rare earth and inorganic functional materials Nankai University Tianjin 300350 China
- College of Chemistry and Chemical Engineering Central South University Changsha 410083 Hunan P. R. China
| | - Nikolay V. Tkachenko
- Department of Chemistry and Biochemistry Utah State University 0300, Old Main Hill Logan Utah 84322-0300 USA
| | - Ivan A. Popov
- Theoretical Division Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Nikita Fedik
- Department of Chemistry and Biochemistry Utah State University 0300, Old Main Hill Logan Utah 84322-0300 USA
| | - Xue Min
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences 5625 Renmin Street Changchun Jilin 130022 China
| | - Cong‐Qiao Xu
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education Tsinghua University Beijing 100084 China
| | - Jun Li
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education Tsinghua University Beijing 100084 China
| | - John E. McGrady
- Department of Chemistry University of Oxford South Parks Road Oxford OX1 3QZ UK
| | - Alexander I. Boldyrev
- Department of Chemistry and Biochemistry Utah State University 0300, Old Main Hill Logan Utah 84322-0300 USA
| | - Zhong‐Ming Sun
- School of Materials Science and Engineering State Key Laboratory of Elemento-Organic Chemistry Tianjin Key Lab for Rare Earth Materials and Applications Centre for Rare earth and inorganic functional materials Nankai University Tianjin 300350 China
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences 5625 Renmin Street Changchun Jilin 130022 China
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35
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Liu C, Tkachenko NV, Popov IA, Fedik N, Min X, Xu C, Li J, McGrady JE, Boldyrev AI, Sun Z. Structure and Bonding in [Sb@In
8
Sb
12
]
3−
and [Sb@In
8
Sb
12
]
5−. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904109] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Chao Liu
- School of Materials Science and Engineering State Key Laboratory of Elemento-Organic Chemistry Tianjin Key Lab for Rare Earth Materials and Applications Centre for Rare earth and inorganic functional materials Nankai University Tianjin 300350 China
- College of Chemistry and Chemical Engineering Central South University Changsha 410083 Hunan P. R. China
| | - Nikolay V. Tkachenko
- Department of Chemistry and Biochemistry Utah State University 0300, Old Main Hill Logan Utah 84322-0300 USA
| | - Ivan A. Popov
- Theoretical Division Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Nikita Fedik
- Department of Chemistry and Biochemistry Utah State University 0300, Old Main Hill Logan Utah 84322-0300 USA
| | - Xue Min
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences 5625 Renmin Street Changchun Jilin 130022 China
| | - Cong‐Qiao Xu
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education Tsinghua University Beijing 100084 China
| | - Jun Li
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education Tsinghua University Beijing 100084 China
| | - John E. McGrady
- Department of Chemistry University of Oxford South Parks Road Oxford OX1 3QZ UK
| | - Alexander I. Boldyrev
- Department of Chemistry and Biochemistry Utah State University 0300, Old Main Hill Logan Utah 84322-0300 USA
| | - Zhong‐Ming Sun
- School of Materials Science and Engineering State Key Laboratory of Elemento-Organic Chemistry Tianjin Key Lab for Rare Earth Materials and Applications Centre for Rare earth and inorganic functional materials Nankai University Tianjin 300350 China
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences 5625 Renmin Street Changchun Jilin 130022 China
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36
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Chu T, Popov IA, Andrade GA, Maurya S, Yang P, Batista ER, Scott BL, Mukundan R, Davis BL. Linked Picolinamide Nickel Complexes as Redox Carriers for Nonaqueous Flow Batteries. ChemSusChem 2019; 12:1304-1309. [PMID: 30675995 DOI: 10.1002/cssc.201802985] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 01/17/2019] [Indexed: 06/09/2023]
Abstract
The use of nickel complexes utilizing non-innocent ligands based on picolinamide to function as redox carriers in flow batteries was explored. The picolinamide moiety was linked together with -CH2 CH2 - (bpen), -CH2 CH2 CH2 - (bppn), and -C6 H4 - (bpb) moieties, resulting in two, three, and four quasi-reversible waves, respectively, for the nickel complexes and >3 V difference between the outermost positive and negative waves. The redox events were theoretically modelled for each complex, showing excellent agreement (<0.3 V difference) between the experimental and modelled potentials. Bulk cycling of the most soluble complex, Ni(bppn), indicated only one of the three waves was reversible. Therefore, Ni(bppn) has the ability to act as a negative charge redox carrier in flow cells.
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Affiliation(s)
- Terry Chu
- Materials Synthesis and Integrated Devices Division, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA
| | - Ivan A Popov
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA
| | - Gabriel A Andrade
- Materials Synthesis and Integrated Devices Division, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA
| | - Sandip Maurya
- Materials Synthesis and Integrated Devices Division, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA
| | - Ping Yang
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA
| | - Enrique R Batista
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA
| | - Brian L Scott
- Materials Synthesis and Integrated Devices Division, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA
| | - Rangachary Mukundan
- Materials Synthesis and Integrated Devices Division, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA
| | - Benjamin L Davis
- Materials Synthesis and Integrated Devices Division, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA
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37
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Zhvansky ES, Pekov SI, Sorokin AA, Shurkhay VA, Eliferov VA, Potapov AA, Nikolaev EN, Popov IA. Metrics for evaluating the stability and reproducibility of mass spectra. Sci Rep 2019; 9:914. [PMID: 30696886 PMCID: PMC6351633 DOI: 10.1038/s41598-018-37560-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 12/06/2018] [Indexed: 11/15/2022] Open
Abstract
In this work, we demonstrate a new approach for assessing the stability and reproducibility of mass spectra obtained via ambient ionization methods. This method is suitable for both comparing experiments during which only one mass spectrum is measured and for evaluating the internal homogeneity of mass spectra collected over a period of time. The approach uses Pearson’s r coefficient and the cosine measure to compare the spectra. It is based on the visualization of dissimilarities between measurements, thus leading to the analysis of dissimilarity patterns. The cosine measure and correlations are compared to obtain better metrics for spectra homogeneity. The method filters out unreliable scans to prevent the analyzed sample from being wrongly characterized. The applicability of the method is demonstrated on a set of brain tumor samples. The developed method could be employed in neurosurgical applications, where mass spectrometry is used to monitor the intraoperative tumor border.
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Affiliation(s)
- E S Zhvansky
- Moscow Institute of Physics and Technology, Dolgoprudnyy, Moscow Region, Moscow, Russian Federation
| | - S I Pekov
- Moscow Institute of Physics and Technology, Dolgoprudnyy, Moscow Region, Moscow, Russian Federation
| | - A A Sorokin
- Moscow Institute of Physics and Technology, Dolgoprudnyy, Moscow Region, Moscow, Russian Federation
| | - V A Shurkhay
- Federal State Autonomous Institution «N.N. Burdenko National Scientific and Practical Center for Neurosurgery» of the Ministry of Healthcare of the Russian Federation, Moscow, Russian Federation
| | - V A Eliferov
- Moscow Institute of Physics and Technology, Dolgoprudnyy, Moscow Region, Moscow, Russian Federation
| | - A A Potapov
- Federal State Autonomous Institution «N.N. Burdenko National Scientific and Practical Center for Neurosurgery» of the Ministry of Healthcare of the Russian Federation, Moscow, Russian Federation
| | - E N Nikolaev
- Skolkovo Institute of Science and Technology, Moscow, Russian Federation.
| | - I A Popov
- Moscow Institute of Physics and Technology, Dolgoprudnyy, Moscow Region, Moscow, Russian Federation
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38
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Popov IA, Mehio N, Chu T, Davis BL, Mukundan R, Yang P, Batista ER. Impact of Ligand Substitutions on Multielectron Redox Properties of Fe Complexes Supported by Nitrogenous Chelates. ACS Omega 2018; 3:14766-14778. [PMID: 31458151 PMCID: PMC6643937 DOI: 10.1021/acsomega.8b01921] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 08/17/2018] [Indexed: 06/10/2023]
Abstract
Redox flow batteries (RFBs) have recently been recognized as a potentially viable technology for scalable energy storage. To take full advantage of RFBs, one possible approach for achieving high energy densities is to maximize a number of redox events by utilizing charge carriers capable of multiple one-electron transfers within the electrochemical window of solvent. However, past efforts to develop more efficient electrolytes for nonaqueous RFBs have mostly been empirical. In this manuscript, we shed light on design principles by theoretically investigating the effects of systematically substituting pyridyl moieties with imine ligands within a series of Fe complexes with some experimental validation. We found that such replacement is an effective strategy for reducing the molecular weight-to-charge ratios of these complexes. Simultaneously, calculations suggest that the reduction potentials and ligand-based redox activity of such substituted N-heterocyclic Fe compounds might be maintained within their +4 → -1 charge states. Additionally, by theoretically examining the role of coordination geometry, vis-à-vis reducing the number of redox noninnocent ligands within the first coordination sphere, we have demonstrated that Fe complexes with one such ligand were also capable of supporting multielectron reduction events and exhibited reduction potentials similar to their parent analogs supported by two or three of the same multidentate ligands. However, some differences in redox nature within the lower (+2 → -1) charge states were also noticed. Specifically, complexes containing two bidentate ligands, or one tridentate ligand, exhibited ligand-based reductions, whereas compounds with one bidentate ligand exhibited metal-centered reductions. The current results pave the way toward the design of the next-generation of Fe complexes with lower molecular weights and greater stored energy for redox flow batteries.
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Affiliation(s)
- Ivan A. Popov
- Theoretical
Division, , and Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Nada Mehio
- Theoretical
Division, , and Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Terry Chu
- Theoretical
Division, , and Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Benjamin L. Davis
- Theoretical
Division, , and Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Rangachary Mukundan
- Theoretical
Division, , and Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Ping Yang
- Theoretical
Division, , and Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Enrique R. Batista
- Theoretical
Division, , and Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
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39
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Liu C, Li LJ, Popov IA, Wilson RJ, Xu CQ, Li J, Boldyrev AI, Sun ZM. Symmetry Reduction upon Size Mismatch: The Non-Icosahedral Intermetalloid Cluster [Co@Ge12
]3−. CHINESE J CHEM 2018. [DOI: 10.1002/cjoc.201800434] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Chao Liu
- State Key Laboratory of Rare Earth Resource Utilization; Changchun Institute of Applied Chemistry, Chinese Academy of Sciences; 5625 Renmin Street, Changchun, Jilin 130022 China
- University of Chinese Academy of Sciences; Beijing 100049 China
- School of Materials Science and Engineering, Research Center of Rare Earth and Inorganic Functional Materials; Nankai University; Tianjin 300350 China
| | - Lei-Jiao Li
- School of Chemistry & Environmental Engineering; Changchun University of Science & Technology; Changchun, Jilin 130022 China
| | - Ivan A. Popov
- Department of Chemistry and Biochemistry; Utah State University; 0300 Old Main Hill, Logan Utah 84322-0300 USA
| | - Robert J. Wilson
- Fachbereich Chemie und Wissenschaftliches Zentrum für Materialwissenschaften (WZMW); Philipps-Universität Marburg; Hans-Meerwein- Straße, 35043, Marburg Germany
| | - Cong-Qiao Xu
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education; Tsinghua University; Beijing 100084 China
| | - Jun Li
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education; Tsinghua University; Beijing 100084 China
| | - Alexander I. Boldyrev
- Department of Chemistry and Biochemistry; Utah State University; 0300 Old Main Hill, Logan Utah 84322-0300 USA
| | - Zhong-Ming Sun
- State Key Laboratory of Rare Earth Resource Utilization; Changchun Institute of Applied Chemistry, Chinese Academy of Sciences; 5625 Renmin Street, Changchun, Jilin 130022 China
- School of Materials Science and Engineering, Research Center of Rare Earth and Inorganic Functional Materials; Nankai University; Tianjin 300350 China
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40
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Liu C, Popov IA, Chen Z, Boldyrev AI, Sun ZM. Frontispiece: Aromaticity and Antiaromaticity in Zintl Clusters. Chemistry 2018. [DOI: 10.1002/chem.201885562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Chao Liu
- School of Materials Science and Engineering; Rare Earth and Inorganic Functional Materials Center; Nankai University; Tianjin 300350 P. R. China
- China State Key Laboratory of Rare Earth Resource Utilization; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun Jilin 130022 P. R. China
- University of Chinese Academy of Sciences; Beijing 100049 P. R. China
| | - Ivan A. Popov
- Theoretical Division; Los Alamos National Laboratory; Los Alamos NM 87545 USA
| | - Zhongfang Chen
- Department of Chemistry; Institute for Functional Nanomaterials; University of Puerto Rico; San Juan USA
| | - Alexander I. Boldyrev
- Department of Chemistry and Biochemistry; Utah State University; 0300 Old Main Hill Logan UT 84322-0300 USA
| | - Zhong-Ming Sun
- School of Materials Science and Engineering; Rare Earth and Inorganic Functional Materials Center; Nankai University; Tianjin 300350 P. R. China
- China State Key Laboratory of Rare Earth Resource Utilization; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun Jilin 130022 P. R. China
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41
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Zhang X, Popov IA, Lundell KA, Wang H, Mu C, Wang W, Schnöckel H, Boldyrev AI, Bowen KH. Realization of an Al≡Al Triple Bond in the Gas‐Phase Na
3
Al
2
−
Cluster via Double Electronic Transmutation. Angew Chem Int Ed Engl 2018; 57:14060-14064. [DOI: 10.1002/anie.201806917] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Xinxing Zhang
- Collaborative Innovation Center of Chemical Science and Engineering College of Chemistry Nankai University Tianjin 300071 China
| | - Ivan A. Popov
- Theoretical Division Los Alamos National Laboratory Los Alamos NM 87545 USA
| | - Katie A. Lundell
- Department of Chemistry and Biochemistry Utah State University 0300 Old Main Hill Logan UT 84322-0300 USA
| | - Haopeng Wang
- Departments of Chemistry and Material Science Johns Hopkins University Baltimore MD 21218 USA
| | - Chaonan Mu
- Collaborative Innovation Center of Chemical Science and Engineering College of Chemistry Nankai University Tianjin 300071 China
| | - Wei Wang
- Collaborative Innovation Center of Chemical Science and Engineering College of Chemistry Nankai University Tianjin 300071 China
| | - Hansgeorg Schnöckel
- Institute of Inorganic Chemistry Karlsruhe Institute of Technology Engesserstr. 15 76131 Karlsruhe Germany
| | - Alexander I. Boldyrev
- Department of Chemistry and Biochemistry Utah State University 0300 Old Main Hill Logan UT 84322-0300 USA
| | - Kit H. Bowen
- Departments of Chemistry and Material Science Johns Hopkins University Baltimore MD 21218 USA
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42
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Zhang X, Popov IA, Lundell KA, Wang H, Mu C, Wang W, Schnöckel H, Boldyrev AI, Bowen KH. Realization of an Al≡Al Triple Bond in the Gas‐Phase Na
3
Al
2
−
Cluster via Double Electronic Transmutation. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806917] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xinxing Zhang
- Collaborative Innovation Center of Chemical Science and Engineering College of Chemistry Nankai University Tianjin 300071 China
| | - Ivan A. Popov
- Theoretical Division Los Alamos National Laboratory Los Alamos NM 87545 USA
| | - Katie A. Lundell
- Department of Chemistry and Biochemistry Utah State University 0300 Old Main Hill Logan UT 84322-0300 USA
| | - Haopeng Wang
- Departments of Chemistry and Material Science Johns Hopkins University Baltimore MD 21218 USA
| | - Chaonan Mu
- Collaborative Innovation Center of Chemical Science and Engineering College of Chemistry Nankai University Tianjin 300071 China
| | - Wei Wang
- Collaborative Innovation Center of Chemical Science and Engineering College of Chemistry Nankai University Tianjin 300071 China
| | - Hansgeorg Schnöckel
- Institute of Inorganic Chemistry Karlsruhe Institute of Technology Engesserstr. 15 76131 Karlsruhe Germany
| | - Alexander I. Boldyrev
- Department of Chemistry and Biochemistry Utah State University 0300 Old Main Hill Logan UT 84322-0300 USA
| | - Kit H. Bowen
- Departments of Chemistry and Material Science Johns Hopkins University Baltimore MD 21218 USA
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43
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Liu C, Popov IA, Chen Z, Boldyrev AI, Sun Z. Aromaticity and Antiaromaticity in Zintl Clusters. Chemistry 2018; 24:14583-14597. [DOI: 10.1002/chem.201801715] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Revised: 05/18/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Chao Liu
- School of Materials Science and Engineering Rare Earth and Inorganic Functional Materials Center Nankai University Tianjin 300350 P. R. China
- China State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun Jilin 130022 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Ivan A. Popov
- Theoretical Division Los Alamos National Laboratory Los Alamos NM 87545 USA
| | - Zhongfang Chen
- Department of Chemistry Institute for Functional Nanomaterials University of Puerto Rico San Juan USA
| | - Alexander I. Boldyrev
- Department of Chemistry and Biochemistry Utah State University 0300 Old Main Hill Logan UT 84322-0300 USA
| | - Zhong‐Ming Sun
- School of Materials Science and Engineering Rare Earth and Inorganic Functional Materials Center Nankai University Tianjin 300350 P. R. China
- China State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun Jilin 130022 P. R. China
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44
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Nikitin PV, Potapov AA, Ryzhova MV, Shurkhay VA, Kulikov EE, Zhvanskiy ES, Popov IA, Nikolaev EN. [The role of lipid metabolism disorders, atypical isoforms of protein kinase C, and mutational status of cytosolic and mitochondrial forms of isocitrate dehydrogenase in carcinogenesis of glial tumors]. Zh Vopr Neirokhir Im N N Burdenko 2018; 82:112-120. [PMID: 29927433 DOI: 10.17116/neiro2018823112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The relationship between molecular genetic and metabolic disorders is one of the challenges of modern oncology. In this review, we consider lipid metabolism and its changes as one of the factors of oncogenesis of glial tumors. Also, we demonstrate that the genome and the metabolome are interconnected by a large number of links, and the metabolic pathways, during their reorganization, are able to drastically affect the genetic structure of the cell and, in particular, cause its tumor transformation. Our own observations and analysis of the literature data allow us to conclude that mass spectrometry is a highly accurate current method for assessing metabolic disorders at the cellular level. The use of mass spectrometry during surgery allows the neurosurgeon to obtain real-time data on the level of specific molecular markers in the resected tissue, thereby bringing intraoperative navigation techniques to the molecular level. The generation of molecular fingerprints for each tumor significantly complements the available neuroimaging, molecular genetic, and immunohistochemical data.
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Affiliation(s)
- P V Nikitin
- Burdenko Neurosurgery Institute, 4-ya Tverskaya-Yamskaya Str., 16, Moscow, Russia, 125047
| | - A A Potapov
- Burdenko Neurosurgery Institute, 4-ya Tverskaya-Yamskaya Str., 16, Moscow, Russia, 125047
| | - M V Ryzhova
- Burdenko Neurosurgery Institute, 4-ya Tverskaya-Yamskaya Str., 16, Moscow, Russia, 125047
| | - V A Shurkhay
- Burdenko Neurosurgery Institute, 4-ya Tverskaya-Yamskaya Str., 16, Moscow, Russia, 125047; Moscow Institute of Physics and Technology, Institutskiy Pereulok, 9, Dolgoprudny, Moscow Region, Russia, 141701
| | - E E Kulikov
- Moscow Institute of Physics and Technology, Institutskiy Pereulok, 9, Dolgoprudny, Moscow Region, Russia, 141701; Federal Research Center 'Fundamentals of Biotechnology', Leninskiy Prospect, 33/2, Moscow, Russia, 119071
| | - E S Zhvanskiy
- Moscow Institute of Physics and Technology, Institutskiy Pereulok, 9, Dolgoprudny, Moscow Region, Russia, 141701
| | - I A Popov
- Moscow Institute of Physics and Technology, Institutskiy Pereulok, 9, Dolgoprudny, Moscow Region, Russia, 141701
| | - E N Nikolaev
- Moscow Institute of Physics and Technology, Institutskiy Pereulok, 9, Dolgoprudny, Moscow Region, Russia, 141701; Skolkovo Institute of Science and Technology, Nobelya Str., 3, Moscow, Russia, 143026; Institute of Energy Problems of Chemical Physics, Leninskiy Prospect, 38/2, Moscow, Russia, 119334
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45
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Popov IA, Starikova AA, Steglenko DV, Boldyrev AI. Frontispiece: Usefulness of the σ-Aromaticity and σ-Antiaromaticity Concepts for Clusters and Solid-State Compounds. Chemistry 2018. [DOI: 10.1002/chem.201880262] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ivan A. Popov
- Department of Chemistry and Biochemistry; Utah State University; Old Main Hill 300 Logan Utah 84322 USA
| | - Alyona A. Starikova
- Institute of Physical and Organic Chemistry; Southern Federal University; 194/2 Stachka Ave. 344090 Rostov-on-Don Russian Federation
| | - Dmitry V. Steglenko
- Institute of Physical and Organic Chemistry; Southern Federal University; 194/2 Stachka Ave. 344090 Rostov-on-Don Russian Federation
| | - Alexander I. Boldyrev
- Department of Chemistry and Biochemistry; Utah State University; Old Main Hill 300 Logan Utah 84322 USA
- Institute of Physical and Organic Chemistry; Southern Federal University; 194/2 Stachka Ave. 344090 Rostov-on-Don Russian Federation
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46
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Liu C, Popov IA, Li L, Li N, Boldyrev AI, Sun Z. [Co
2
@Ge
16
]
4−
: Localized versus Delocalized Bonding in Two Isomeric Intermetalloid Clusters. Chemistry 2017; 24:699-705. [DOI: 10.1002/chem.201704444] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Chao Liu
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun, Jilin 130022 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Ivan A. Popov
- Department of Chemistry and Biochemistry Utah State University 0300, Old Main Hill Logan Utah 84322-0300 USA
| | - Lei‐Jiao Li
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun, Jilin 130022 China
| | - Ning Li
- Rigaku (Beijing) Co., Ltd. Beijing 100044 China
| | - Alexander I. Boldyrev
- Department of Chemistry and Biochemistry Utah State University 0300, Old Main Hill Logan Utah 84322-0300 USA
| | - Zhong‐Ming Sun
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun, Jilin 130022 China
- State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 P. R. China
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47
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Popov IA, Starikova AA, Steglenko DV, Boldyrev AI. Usefulness of the σ‐Aromaticity and σ‐Antiaromaticity Concepts for Clusters and Solid‐State Compounds. Chemistry 2017; 24:292-305. [DOI: 10.1002/chem.201702035] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Indexed: 12/19/2022]
Affiliation(s)
- Ivan A. Popov
- Department of Chemistry and Biochemistry Utah State University Old Main Hill 300 Logan Utah 84322 USA
| | - Alyona A. Starikova
- Institute of Physical and Organic Chemistry Southern Federal University 194/2 Stachka Ave. 344090 Rostov-on-Don Russian Federation
| | - Dmitry V. Steglenko
- Institute of Physical and Organic Chemistry Southern Federal University 194/2 Stachka Ave. 344090 Rostov-on-Don Russian Federation
| | - Alexander I. Boldyrev
- Department of Chemistry and Biochemistry Utah State University Old Main Hill 300 Logan Utah 84322 USA
- Institute of Physical and Organic Chemistry Southern Federal University 194/2 Stachka Ave. 344090 Rostov-on-Don Russian Federation
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48
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Muñoz-Castro A, Popov IA, Boldyrev AI. Long-range magnetic response of toroidal boron structures: B 16 and [Co@B 16] -/3- species. Phys Chem Chem Phys 2017; 19:26145-26150. [PMID: 28930312 DOI: 10.1039/c7cp04158f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A correlation between the long-range characteristics of the magnetic response of toroidal boron-based structures is given, involving the uncoordinated B16 cluster and the hypercoordinated [Co@B16]-/3- counterparts. It is found that the perfectly symmetrical doubly aromatic systems share common features, involving a continuous shielding region for the orientation-averaged response (isotropic), and a long-ranged shielding cone under a perpendicularly oriented applied field (B). In contrast, the conflicting aromatic structure given by the slightly distorted species, exhibits an enhanced deshielding cone under B, which dominates the isotropic character of the response. In addition, [Mn@B16]- and [Cu@B16]- clusters were evaluated, denoting the role of the coordinated metal atom in such property. This information is valuable to account for a global magnetic response driven by the bonding pattern acting in each respective compound, and for the possible characterization of intermolecular aggregates or extended structures via NMR experiments.
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Affiliation(s)
- Alvaro Muñoz-Castro
- Grupo de Química Inorgánica y Materiales Moleculares, Universidad Autonoma de Chile, El Llano Subercaseaux 2801, Santiago, Chile.
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Kostyukevich YI, Kononikhin AS, Indeykina MI, Popov IA, Bocharov KV, Spassky AI, Kozin SA, Makarov AA, Nikolaev EN. [Secondary Structure of Aβ(1-16) Complexes with Zinc: A Study in the Gas Phase Using Deuterium/Hydrogen Exchange and Ultra-High-Resolution Mass Spectrometry]. Mol Biol (Mosk) 2017; 51:710-716. [PMID: 28900091 DOI: 10.7868/s0026898417030107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Accepted: 09/29/2016] [Indexed: 11/23/2022]
Abstract
Complexes of peptide fragment 1-16 of beta-amyloid with transition metals play an important role in the development of a broad class of neurodegenerative diseases, which determines the interest in investigating the structures of these complexes. In this work, we have applied the method of the deuterium/hydrogen exchange in combination with ultra-high-resolution mass spectrometry to study conformational changes in (1-16) beta-amyloid peptide induced by binding of zinc(II) atoms. The efficiency of the deuterium/hydrogen exchange depended on the number of zinc atoms bound to the peptide and on the temperature of the ionization source region. Deuterium/hydrogen exchange reactions have been performed directly in the ionization source. The number of exchanges decreased considerably with an increasing numbers of zinc atoms. The relationship has been described with a damped exponential curve, which indicated that the binding of zinc atoms altered the conformation of the peptide ion by making it less open, which limits the access to inner areas of the molecule.
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Affiliation(s)
- Yu I Kostyukevich
- Moscow Institute of Physics and Technology (State University), Dolgprudny, Moscow oblast, 141701 Russia.,Skolkovo Institute of Science and Technology, Skolkovo Innovation Center, Moscow, 143026 Russia
| | - A S Kononikhin
- Moscow Institute of Physics and Technology (State University), Dolgprudny, Moscow oblast, 141701 Russia.,Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Moscow, 119334 Russia.,Talrose Institute for Energy Problems of Chemical Physics, Russian Academy of Sciences, Moscow, 119334 Russia.,
| | - M I Indeykina
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Moscow, 119334 Russia
| | - I A Popov
- Moscow Institute of Physics and Technology (State University), Dolgprudny, Moscow oblast, 141701 Russia.,Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Moscow, 119334 Russia
| | - K V Bocharov
- Moscow Institute of Physics and Technology (State University), Dolgprudny, Moscow oblast, 141701 Russia.,Talrose Institute for Energy Problems of Chemical Physics, Russian Academy of Sciences, Moscow, 119334 Russia
| | - A I Spassky
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Moscow, 119334 Russia.,Talrose Institute for Energy Problems of Chemical Physics, Russian Academy of Sciences, Moscow, 119334 Russia
| | - S A Kozin
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991 Russia
| | - A A Makarov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991 Russia
| | - E N Nikolaev
- Moscow Institute of Physics and Technology (State University), Dolgprudny, Moscow oblast, 141701 Russia.,Skolkovo Institute of Science and Technology, Skolkovo Innovation Center, Moscow, 143026 Russia.,Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Moscow, 119334 Russia.,Talrose Institute for Energy Problems of Chemical Physics, Russian Academy of Sciences, Moscow, 119334 Russia
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50
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Brzhozovskiy A, Kononikhin A, Indeykina M, Pastushkova LK, Popov IA, Nikolaev EN, Larina IM. Label-free study of cosmonaut's urinary proteome changes after long-duration spaceflights. Eur J Mass Spectrom (Chichester) 2017; 23:225-229. [PMID: 29028400 DOI: 10.1177/1469066717717610] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
During the entire time that cosmonauts stay on board the international space station, different extreme space flight factors affect their bodies. In order to find out what physiological changes occur under the influence of spaceflight, different parameters of the human body before and after flights are monitored. Analysis of the urine proteome is one of the most perspective non-invasive methods of condition monitoring. The aim of the study was to perform a comparative semi-quantitative label-free urine proteome analysis of samples collected from 21 cosmonauts before and after long-duration spaceflight at the international space station. For proteomic analysis, urine samples were collected from cosmonauts at three time periods: six months prior to the flight as a background, and on days 1 and 7 of the recovery period after landing. All probes were analyzed by LC-MS/MS, and 256 proteins were identified with more than one unique peptide. The core proteome consists of 50 proteins that are detected in more than 70% of the samples. Label-free semi-quantitative analysis enables us to find 20 proteins which were significantly changed on +1 day and +7 day with respect to background. Most of these proteins participate in the regulation of biological processes, in the regulation of the immune system and in intracellular processes also; some of these proteins are related with stress and response to stimulus. In conclusion, the proteomic analysis of cosmonauts' urine samples provides new data on the human body's adaptation to ground conditions after long-duration spaceflight.
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Affiliation(s)
- A Brzhozovskiy
- 1 Institute of Biomedical Problems - Russian Federation State Scientific Research Center, Russian Academy of Sciences, Moscow, Russia
| | - A Kononikhin
- 1 Institute of Biomedical Problems - Russian Federation State Scientific Research Center, Russian Academy of Sciences, Moscow, Russia
- 2 Moscow Institute of Physics and Technology, Moscow, Russia
- 3 V.L. Talrose Institute for Energy Problems of Chemical Physics, Russian Academy of Sciences, Moscow, Russia
| | - M Indeykina
- 3 V.L. Talrose Institute for Energy Problems of Chemical Physics, Russian Academy of Sciences, Moscow, Russia
- 4 Emanuel Institute for Biochemical Physics, Russian Academy of Sciences, Moscow, Russia
| | - LKh Pastushkova
- 1 Institute of Biomedical Problems - Russian Federation State Scientific Research Center, Russian Academy of Sciences, Moscow, Russia
| | - I A Popov
- 2 Moscow Institute of Physics and Technology, Moscow, Russia
- 3 V.L. Talrose Institute for Energy Problems of Chemical Physics, Russian Academy of Sciences, Moscow, Russia
| | - E N Nikolaev
- 3 V.L. Talrose Institute for Energy Problems of Chemical Physics, Russian Academy of Sciences, Moscow, Russia
- 4 Emanuel Institute for Biochemical Physics, Russian Academy of Sciences, Moscow, Russia
- 5 Skolkovo Institute of Science and Technology, Space Cluster, Skolkovo, Russia
| | - I M Larina
- 1 Institute of Biomedical Problems - Russian Federation State Scientific Research Center, Russian Academy of Sciences, Moscow, Russia
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