1
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Bai Z, Scheibe B, Sperling JM, Beck NB, Brannon JP, Gomez Martinez D, Rotermund BM, Albrecht-Schönzart TE. Transformation of Mononuclear Plutonium(III) Tetrazolate Complexes into Dinuclear Complexes in the Solid State. Inorg Chem 2024; 63:1266-1273. [PMID: 38165641 DOI: 10.1021/acs.inorgchem.3c03700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
The salt metathesis reaction of Na(pmtz)·H2O [pmtz- = 5-(pyrimidyl)tetrazolate] and PuBr3·nH2O in an aqueous media leads to the formation of the mononuclear compound [Pu(pmtz)3(H2O)3]·(3 + n) H2O (Pu1, n = ∼8) that is isotypic with the lanthanide compounds [Ln(pmtz)3(H2O)3]·(3 + n) H2O (Ln = Ce-Nd). Dissolution and recrystallization of Pu1 in water yields the dinuclear compound {[Pu(pmtz)2(H2O)3]2(μ-pmtz)}2(pmtz)2·14H2O (Pu2), which is isotypic with the lanthanide compounds {[Ln(pmtz)2(H2O)3]2(μ-pmtz)}2(pmtz)2·14H2O (Ln = Nd and Sm). Like their nine-coordinate ionic radii, the M-O and M-N bond lengths in Pu1/Pu2 and Nd1/Nd2, respectively, are within error of one another. The Laporte-forbidden 4f → 4f and 5f → 5f transitions are also assigned in the UV-vis-NIR spectra for these f-element tetrazolate coordination compounds.
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Affiliation(s)
- Zhuanling Bai
- Department of Chemistry and Nuclear Science & Engineering Center, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Benjamin Scheibe
- Department of Chemistry and Nuclear Science & Engineering Center, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Joseph M Sperling
- Department of Chemistry and Nuclear Science & Engineering Center, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Nicholas B Beck
- Department of Chemistry and Nuclear Science & Engineering Center, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Jacob P Brannon
- Department of Chemistry and Nuclear Science & Engineering Center, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Daniela Gomez Martinez
- Department of Chemistry and Nuclear Science & Engineering Center, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Brian M Rotermund
- Department of Chemistry and Nuclear Science & Engineering Center, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Thomas E Albrecht-Schönzart
- Department of Chemistry and Nuclear Science & Engineering Center, Colorado School of Mines, Golden, Colorado 80401, United States
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2
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Nößler M, Neuman NI, Böser L, Jäger R, Singha Hazari A, Hunger D, Pan Y, Lücke C, Bens T, van Slageren J, Sarkar B. Spin Crossover and Fluorine-Specific Interactions in Metal Complexes of Terpyridines with Polyfluorocarbon Tails. Chemistry 2023; 29:e202301246. [PMID: 37191067 DOI: 10.1002/chem.202301246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 05/15/2023] [Accepted: 05/16/2023] [Indexed: 05/17/2023]
Abstract
In coordination chemistry and materials science, terpyridine ligands are of great interest, due to their ability to form stable complexes with a broad range of transition metal ions. We report three terpyridine ligands containing different perfluorocarbon (PFC) tails on the backbone and the corresponding FeII and CoII complexes. The CoII complexes display spin crossover close to ambient temperature, and the nature of this spin transition is influenced by the length of the PFC tail on the ligand backbone. The electrochemical properties of the metal complexes were investigated with cyclic voltammetry revealing one oxidation and several reduction processes. The fluorine-specific interactions were investigated by EPR measurements. Analysis of the EPR spectra of the complexes as microcrystalline powders and in solution reveals exchange-narrowed spectra without resolved hyperfine splittings arising from the 59 Co nucleus; this suggests complex aggregation in solution mediated by interactions of the PFC tails. Interestingly, addition of perfluoro-octanol in different ratios to the acetonitrile solution of the sample resulted in the disruption of the F ⋯ ${\cdots }$ F interactions of the tails. To the best of our knowledge, this is the first investigation of fluorine-specific interactions in metal complexes through EPR spectroscopy, as exemplified by exchange narrowing.
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Affiliation(s)
- Maite Nößler
- Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstraße 34-36, 14195, Berlin, Germany
| | - Nicolás I Neuman
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
- Instituto de Desarrollo Tecnológico para la Industria Química, INTEC, UNL-CONICET Predio CCT Conicet "Dr. Alberto Cassano", Colectora RN 168, Km 0, Paraje El Pozo, 3000, Santa Fe, Argentina
| | - Lisa Böser
- Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstraße 34-36, 14195, Berlin, Germany
| | - René Jäger
- Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstraße 34-36, 14195, Berlin, Germany
| | - Arijit Singha Hazari
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - David Hunger
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Yixian Pan
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Clemens Lücke
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Tobias Bens
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Joris van Slageren
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Biprajit Sarkar
- Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstraße 34-36, 14195, Berlin, Germany
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
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3
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Bai Z, Scheibe B, Sperling JM, Albrecht-Schönzart TE. Syntheses and Characterization of Tetrazolate-Based Lanthanide Compounds and Selective Crystallization Separation of Neodymium and Dysprosium. Inorg Chem 2022; 61:19193-19202. [DOI: 10.1021/acs.inorgchem.2c02840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Zhuanling Bai
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida32306, United States
| | - Benjamin Scheibe
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida32306, United States
| | - Joseph M. Sperling
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida32306, United States
| | - Thomas E. Albrecht-Schönzart
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida32306, United States
- Department of Chemistry, Colorado School of Mines, Golden, Colorado80401, United States
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4
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Cuza E, Mekuimemba CD, Cosquer N, Conan F, Pillet S, Chastanet G, Triki S. Spin Crossover and High-Spin State in Fe(II) Anionic Polymorphs Based on Tripodal Ligands. Inorg Chem 2021; 60:6536-6549. [PMID: 33843234 DOI: 10.1021/acs.inorgchem.1c00335] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two new mononuclear Fe(II) polymorphs, [(C2H5)4N]2[Fe(py3C-OEt)(NCS)3]2 (1) and [(C2H5)4N][Fe(py3C-OEt)(NCS)3] (2) (py3C-OEt = tris(pyridin-2-yl)ethoxymethane), have been synthesized and characterized by single-crystal X-ray diffraction, by magnetic and photomagnetic measurements, and by detailed variable-temperature infrared spectroscopy. The molecular structure, in both complexes, is composed of the same anionic [Fe(py3C-OEt)(NCS)3]- complex (two units for 1 and one unit for 2) generated by coordination to the Fe(II) metal center of one tridentate py3C-OEt tripodal ligand and three terminal κN-SCN coligands. Magnetic studies revealed that polymorph 2 displays a high-spin (HS) state over the entire studied temperature range (300-10 K), while complex 1 exhibits an abrupt and complete spin crossover (SCO) transition at ca. 132.3 K, the structural characterizations of which, performed at 295 and 100 K, show a strong modification, resulting from the thermal evolutions of the Fe-N bond lengths and of the distortion parameters (∑ and Θ) of the FeN6 coordination sphere, in agreement with the presence of HS and low-spin (LS) states at 295 and 100 K, respectively. This thermal transition has been also confirmed by the thermal evolution of the maximum absorbance for ν(NCS) vibrational bands recorded in the temperature range 200-10 K. In 1 the signature of a metastable photoinduced HS state has been observed using photomagnetic and photoinfrared spectroscopy, leading to a similar T(LIESST) relaxation temperature (LIESST = light-induced excited spin-state trapping) of 70 K.
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Affiliation(s)
- Emmelyne Cuza
- Univ Brest, CNRS, CEMCA, 6 Avenue Le Gorgeu, C.S. 93837-29238 Brest Cedex 3, France
| | | | - Nathalie Cosquer
- Univ Brest, CNRS, CEMCA, 6 Avenue Le Gorgeu, C.S. 93837-29238 Brest Cedex 3, France
| | - Françoise Conan
- Univ Brest, CNRS, CEMCA, 6 Avenue Le Gorgeu, C.S. 93837-29238 Brest Cedex 3, France
| | | | - Guillaume Chastanet
- CNRS, Université Bordeaux, ICMCB, 87 Av. Doc. A. Schweitzer, F-33608 Pessac, France
| | - Smail Triki
- Univ Brest, CNRS, CEMCA, 6 Avenue Le Gorgeu, C.S. 93837-29238 Brest Cedex 3, France
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5
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Liu Y, Dong Z, Yang R, Li H, Liu Y, Ye Z. Imino-bridged N-rich energetic materials: C 4H 3N 17 and their derivatives assembled from the powerful combination of four tetrazoles. CrystEngComm 2021. [DOI: 10.1039/d1ce00674f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Imino-bridged symmetric N-rich energetic materials with high energetics and good stability.
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Affiliation(s)
- Yifei Liu
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- P.R. China
| | - Zhen Dong
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- P.R. China
| | - Rui Yang
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- P.R. China
| | - Haiyan Li
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- P.R. China
| | - Yaxin Liu
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- P.R. China
| | - Zhiwen Ye
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- P.R. China
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6
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Ouyang ZJ, Mo XY, Ye JQ, Yu XX, Huang SY, Liu XL, Chen WB, Gao S, Dong W. High temperature anionic Fe(III) spin crossover behavior in a mixed-valence Fe(II)/Fe(III) complex. Dalton Trans 2021; 50:5960-5967. [PMID: 33949504 DOI: 10.1039/d1dt00111f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two ion-pair Fe(iii) complexes (PPh4)[FeIII(HATD)2]·2H2O (1, H3ATD = azotetrazolyl-2,7-dihydroxynaphthalene) and [FeII(phen)3][FeIII(HATD)2]2·3DMA·3.5H2O (2, phen = 1,10-phenanthroline, DMA = N,N-dimethylformamide) were synthesized by employing the tridentate ligand H3ATD. Crystal structure analyses reveal that complexes 1 and 2 consist of FeIII ions in an octahedral environment where a FeIII ion is coordinated by two HATD2- ligands forming the [FeIII(HATD)2]- core. The shortest cationanion distance between the phosphorus ion of the (PPh4)+ cation and the ferric ion of the [FeIII(HATD)2]- anion is 13.190 Å in complex 1, whereas that between the ferrous ion of the [FeII(Phen)3]2+ cation and the ferric ion of the [FeIII(HATD)2]- anion is 7.821 Å in complex 2. C-HC and C-HO hydrogen interactions between the [FeII(phen)3]2+ cation and the [FeIII(HATD)2]- anion are observed in 2. Face-to-face π-π stacking interactions between naphthalene rings with the separated interplanar center to center distances of 3.421-3.680 Å were observed, which result in a one-dimensional supramolecular chain in complexes 1 and 2. Magnetic measurements show that complex 1 is in the low-spin (LS) state below 500 K, whereas 2 undergoes a high temperature spin crossover (SCO) between 360 and 500 K. Magneto-structural relationship studies reveal that π-stacking, hydrogen interactions and Coulomb interactions between the [FeIII(HATD)2]- anion and the [FeII(phen)3]2+ cation play a crucial role in the high temperature Fe(iii) SCO behaviour of complex 2.
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Affiliation(s)
- Zhi-Jian Ouyang
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, P. R. China.
| | - Xiao-Ying Mo
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, P. R. China.
| | - Jia-Qi Ye
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, P. R. China.
| | - Xiao-Xuan Yu
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, P. R. China.
| | - Shu-Yuan Huang
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, P. R. China.
| | - Xiao-Ling Liu
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, P. R. China.
| | - Wen-Bin Chen
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, P. R. China.
| | - Song Gao
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, P. R. China
| | - Wen Dong
- Guangzhou Key Laboratory for Environmentally Functional Materials and Technology, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, P. R. China.
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7
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Richardson P, Gálico DA, Ovens J, Sigoli FA, Murugesu M. Incorporation of a nitrogen-rich energetic ligand in a {Yb} complex exhibiting slow relaxation of the magnetisation under an applied field. Dalton Trans 2020; 49:10344-10348. [PMID: 32699872 DOI: 10.1039/d0dt00696c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Though often used as the precursor in energetic materials research and organic synthesis, 3,6-dihydrazinyl-1,2,4,5-tetrazine (dhtz) has not been previously explored in coordination chemistry. Herein, we present the first crystalline coordination compound with dhtz, [Yb2(dhtz)(fod)6] (fod- = 6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5-octanedionate). This compound exhibits Single-Molecule Magnet behaviour under an applied magnetic field, and mJ states were resolved through luminescence studies.
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Affiliation(s)
- Paul Richardson
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, ON K1N 6N5, Canada.
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8
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Spin Cross-Over (SCO) Anionic Fe(II) Complexes Based on the Tripodal Ligand Tris(2-pyridyl)ethoxymethane. MAGNETOCHEMISTRY 2020. [DOI: 10.3390/magnetochemistry6020026] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Reactions of Fe(II) with the tripodal chelating ligand 1,1,1-tris(2-pyridyl)ethoxymethane (py3C-OEt) and (NCE)− co-ligands (E = S, Se, BH3) give a series of mononuclear complexes formulated as [Fe(py3C-OEt)2][Fe(py3C-OEt)(NCE)3]2·2CH3CN, with E = S (1) and BH3 (2). These compounds are the first Fe(II) spin cross-over (SCO) complexes based on the tripodal ligand tris(2-pyridyl)ethoxymethane and on the versatile co-ligands (NCS)− and (NCBH3)−. The crystal structure reveals discrete monomeric isomorph structures formed by a cationic [Fe(py3C-OEt)2]2+ complex and by two equivalent anionic [Fe(py3C-OEt)(NCE)3]− complexes. In the cations the Fe(II) is facially coordinated by two py3C-OEt tripodal ligands whereas in the anion the three nitrogen atoms of the tripodal ligand are facially coordinated and the N-donor atoms of the three (NCE)− co-ligands occupy the remaining three positions to complete the distorted octahedral environment of the Fe(II) centre. The magnetic studies show the presence of gradual SCO for both complexes: A one-step transition around 205 K for 1 and a two-step transition for compound 2, centered around 245 K and 380 K.
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9
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Wu WW, Wu SG, Chen YC, Huang GZ, Lyu BH, Ni ZP, Tong ML. Spin-crossover in an organic–inorganic hybrid perovskite. Chem Commun (Camb) 2020; 56:4551-4554. [DOI: 10.1039/d0cc00992j] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The first spin-crossover complex with an organic–inorganic hybrid perovskite structure is reported, which displays three-step spin-crossover, light-induced excited spin-state trapping and spin-state dependent fluorescence properties.
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Affiliation(s)
- Wei-Wei Wu
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou, 510275
- P. R. China
| | - Si-Guo Wu
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou, 510275
- P. R. China
| | - Yan-Cong Chen
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou, 510275
- P. R. China
| | - Guo-Zhang Huang
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou, 510275
- P. R. China
| | - Bang-Heng Lyu
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou, 510275
- P. R. China
| | - Zhao-Ping Ni
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou, 510275
- P. R. China
| | - Ming-Liang Tong
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou, 510275
- P. R. China
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11
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Ruminski RR, Malkan RM, Gonzalez GM, Powell BL, Hiskey MA. Synthesis and characterization of bis bipyridyl ruthenium(II) and osmium(II) complexes with 5,5′-bis-tetrazolate and N,N-bis(tetrazol-5-yl)-amine. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2016.07.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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12
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Liu Q, Jin B, Zhang Q, Shang Y, Guo Z, Tan B, Peng R. Nitrogen-Rich Energetic Metal-Organic Framework: Synthesis, Structure, Properties, and Thermal Behaviors of Pb(II) Complex Based on N,N-Bis(1H-tetrazole-5-yl)-Amine. MATERIALS 2016; 9:ma9080681. [PMID: 28773805 PMCID: PMC5512347 DOI: 10.3390/ma9080681] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 07/21/2016] [Accepted: 07/25/2016] [Indexed: 11/16/2022]
Abstract
The focus of energetic materials is on searching for a high-energy, high-density, insensitive material. Previous investigations have shown that 3D energetic metal-organic frameworks (E-MOFs) have great potential and advantages in this field. A nitrogen-rich E-MOF, Pb(bta)·2H₂O [N% = 31.98%, H₂bta = N,N-Bis(1H-tetrazole-5-yl)-amine], was prepared through a one-step hydrothermal reaction in this study. Its crystal structure was determined through single-crystal X-ray diffraction, Fourier transform infrared spectroscopy, and elemental analysis. The complex has high heat denotation (16.142 kJ·cm-3), high density (3.250 g·cm-3), and good thermostability (Tdec = 614.9 K, 5 K·min-1). The detonation pressure and velocity obtained through theoretical calculations were 43.47 GPa and 8.963 km·s-1, respectively. The sensitivity test showed that the complex is an impact-insensitive material (IS > 40 J). The thermal decomposition process and kinetic parameters of the complex were also investigated through thermogravimetry and differential scanning calorimetry. Non-isothermal kinetic parameters were calculated through the methods of Kissinger and Ozawa-Doyle. Results highlighted the nitrogen-rich MOF as a potential energetic material.
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Affiliation(s)
- Qiangqiang Liu
- Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621010, China.
- State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, Mianyang 621010, China.
| | - Bo Jin
- State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, Mianyang 621010, China.
| | - Qingchun Zhang
- State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, Mianyang 621010, China.
| | - Yu Shang
- State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, Mianyang 621010, China.
| | - Zhicheng Guo
- School of National Defence Science and Technology, Southwest University of Science and Technology, Mianyang 621010, China.
| | - Bisheng Tan
- Institute of Chemical Materials, Chinese Academy of Engineering Physics, Mianyang 621010, China.
| | - Rufang Peng
- Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621010, China.
- State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, Mianyang 621010, China.
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13
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The Role of Coulomb Interactions for Spin Crossover Behaviors and Crystal Structural Transformation in Novel Anionic Fe(III) Complexes from a π-Extended ONO Ligand. CRYSTALS 2016. [DOI: 10.3390/cryst6050049] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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15
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Huang W, Shen F, Zhang M, Wu D, Pan F, Sato O. Room-temperature switching of magnetic hysteresis by reversible single-crystal-to-single-crystal solvent exchange in imidazole-inspired Fe(ii) complexes. Dalton Trans 2016; 45:14911-8. [DOI: 10.1039/c6dt01777k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Molecular switch ON/OFF magnetic hysteresis around room temperature can be achieved by reversible single-crystal-to-single-crystal (SCSC) solvent exchange in imidazole-inspired dihydroquinazoline Fe(ii) complexes.
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Affiliation(s)
- Wei Huang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- Collaborative Innovation Center of Advanced Catalysis & Green Manufacturing
- School of Petrochemical Engineering
- Changzhou University
- Changzhou
| | - Fuxing Shen
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- Collaborative Innovation Center of Advanced Catalysis & Green Manufacturing
- School of Petrochemical Engineering
- Changzhou University
- Changzhou
| | - Ming Zhang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- Collaborative Innovation Center of Advanced Catalysis & Green Manufacturing
- School of Petrochemical Engineering
- Changzhou University
- Changzhou
| | - Dayu Wu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- Collaborative Innovation Center of Advanced Catalysis & Green Manufacturing
- School of Petrochemical Engineering
- Changzhou University
- Changzhou
| | - Feifei Pan
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- Collaborative Innovation Center of Advanced Catalysis & Green Manufacturing
- School of Petrochemical Engineering
- Changzhou University
- Changzhou
| | - Osamu Sato
- Institute for Materials Chemistry and Engineering
- Kyushu University
- Fukuoka
- Japan
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16
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Takahashi K, Kawamukai K, Okai M, Mochida T, Sakurai T, Ohta H, Yamamoto T, Einaga Y, Shiota Y, Yoshizawa K. A New Family of Anionic FeIII
Spin Crossover Complexes Featuring a Weak-Field N2
O4
Coordination Octahedron. Chemistry 2015; 22:1253-7. [DOI: 10.1002/chem.201504883] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Kazuyuki Takahashi
- Department of Chemistry; Kobe University; Rokkodai, Nada-ku Kobe 657-8501 Japan
| | - Kiko Kawamukai
- Department of Chemistry; Kobe University; Rokkodai, Nada-ku Kobe 657-8501 Japan
| | - Mitsunobu Okai
- Department of Chemistry; Kobe University; Rokkodai, Nada-ku Kobe 657-8501 Japan
| | - Tomoyuki Mochida
- Department of Chemistry; Kobe University; Rokkodai, Nada-ku Kobe 657-8501 Japan
| | - Takahiro Sakurai
- Center for Supports to Research and Education Activities; Kobe University; 1-1 Rokkodai, Nada-ku Kobe 657-8501 Japan
| | - Hitoshi Ohta
- Molecular Photoscience Research Center; Kobe University; 1-1 Rokkodai, Nada-ku Kobe 657-8501 Japan
| | - Takashi Yamamoto
- Department of Chemistry; Keio University; 3-14-1 Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Yasuaki Einaga
- Department of Chemistry; Keio University; 3-14-1 Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Yoshihito Shiota
- Institute for Materials Chemistry and Engineering; Kyushu University; 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
| | - Kazunari Yoshizawa
- Institute for Materials Chemistry and Engineering; Kyushu University; 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
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17
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Borgogno A, Rastrelli F, Bagno A. Predicting the spin state of paramagnetic iron complexes by DFT calculation of proton NMR spectra. Dalton Trans 2015; 43:9486-96. [PMID: 24823843 DOI: 10.1039/c4dt00671b] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Many transition-metal complexes easily change their spin state S in response to external perturbations (spin crossover). Determining such states and their dynamics can play a central role in the understanding of useful properties such as molecular magnetism or catalytic behavior, but is often far from straightforward. In this work we demonstrate that, at a moderate computational cost, density functional calculations can predict the correct ground spin state of Fe(ii) and Fe(iii) complexes and can then be used to determine the (1)H NMR spectra of all spin states. Since the spectral features are remarkably different according to the spin state, calculated (1)H NMR resonances can be used to infer the correct spin state, along with supporting the structure elucidation of numerous paramagnetic complexes.
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Affiliation(s)
- Andrea Borgogno
- Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo, 1 - 35131 Padova, Italy.
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18
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Li F, Zhao W, Chen S, Zhang T, Zhou Z, Yang L. Nitrogen-Rich Alkali Metal Salts (Na and K) of [Bis(N,N-bis(1H-tetrazol-5-yl)amine)-zinc(II)] Anion: Syntheses, Crystal Structures, and Energetic Properties. Z Anorg Allg Chem 2015. [DOI: 10.1002/zaac.201500078] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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19
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Liu W, Bao X, Li JY, Qin YL, Chen YC, Ni ZP, Tong ML. High-temperature spin crossover in two solvent-free coordination polymers with unusual high thermal stability. Inorg Chem 2015; 54:3006-11. [PMID: 25706684 DOI: 10.1021/acs.inorgchem.5b00119] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two solvent-free two-dimensional (2D) coordination polymers, (2)∞[Fe(ptim)2] (1) and (2)∞[Fe(ptpy)2] (2) (Hptim = 2-(5-(4-(1H-imidazol-1-yl)phenyl)-4H-1,2,4-triazol-3-yl)pyridine; Hptpy = 2-(5-(4-(pyridin-3-yl)phenyl)-4H-1,2,4-triazol-3-yl)pyridine), have been successfully prepared by solvothermal reactions. Their iron atoms are bridged by the corresponding multidentate anionic ligands into dense neutral structures. The magnetic data reveal that complexes 1 and 2 are rare examples exhibiting reversible one-step high-temperature spin crossover behaviors with spin transition temperatures of 419 and 416 K, respectively. Moreover, these structures also display remarkable thermal stability up to 714 K (for 1) and 690 K (for 2), which are confirmed by thermogravimetric and variable-temperature powder X-ray diffraction analyses.
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Affiliation(s)
- Wei Liu
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Sun Yat-Sen University , Guangzhou 510275, People's Republic of China
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20
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Li F, Bi Y, Zhao W, Zhang T, Zhou Z, Yang L. Nitrogen-Rich Salts Based on the Energetic [Monoaquabis(N,N-bis(1H-tetrazol-5-yl)amine)-zinc(II)] Anion: A Promising Design in the Development of New Energetic Materials. Inorg Chem 2015; 54:2050-7. [DOI: 10.1021/ic503021c] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fugang Li
- State Key Laboratory of Explosion Science
and Technology, Beijing Institute of Technology, No. 5, South Street Zhongguancun, Beijing 100081, China
| | - Yangang Bi
- State Key Laboratory of Explosion Science
and Technology, Beijing Institute of Technology, No. 5, South Street Zhongguancun, Beijing 100081, China
| | - Wenyuan Zhao
- State Key Laboratory of Explosion Science
and Technology, Beijing Institute of Technology, No. 5, South Street Zhongguancun, Beijing 100081, China
| | - Tonglai Zhang
- State Key Laboratory of Explosion Science
and Technology, Beijing Institute of Technology, No. 5, South Street Zhongguancun, Beijing 100081, China
| | - Zunning Zhou
- State Key Laboratory of Explosion Science
and Technology, Beijing Institute of Technology, No. 5, South Street Zhongguancun, Beijing 100081, China
| | - Li Yang
- State Key Laboratory of Explosion Science
and Technology, Beijing Institute of Technology, No. 5, South Street Zhongguancun, Beijing 100081, China
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21
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Wu N, Melan CFC, Stevenson KA, Fleischel O, Guo H, Habib F, Holmberg RJ, Murugesu M, Mosey NJ, Nierengarten H, Petitjean A. Systematic study of the synthesis and coordination of 2-(1,2,3-triazol-4-yl)-pyridine to Fe(ii), Ni(ii) and Zn(ii); ion-induced folding into helicates, mesocates and larger architectures, and application to magnetism and self-selection. Dalton Trans 2015; 44:14991-5005. [DOI: 10.1039/c5dt00233h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The 2-pyridyl–1,2,3-triazole chelate was found to display unique coordination properties.
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Affiliation(s)
- Nan Wu
- Department of Chemistry
- Queen's University
- Kingston
- Canada
| | | | | | | | - Huan Guo
- Department of Chemistry
- Queen's University
- Kingston
- Canada
| | - Fatemah Habib
- Department of Chemistry
- University of Ottawa
- Ottawa K1N6N5
- Canada
| | | | | | | | - Hélène Nierengarten
- Service de Spectrométrie de masse de l'Institut de Chimie de Strasbourg
- 67000 Strasbourg
- France
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22
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Holins in bacteria, eukaryotes, and archaea: multifunctional xenologues with potential biotechnological and biomedical applications. J Bacteriol 2014; 197:7-17. [PMID: 25157079 DOI: 10.1128/jb.02046-14] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Holins form pores in the cytoplasmic membranes of bacteria for the primary purpose of releasing endolysins that hydrolyze the cell wall and induce cell death. Holins are encoded within bacteriophage genomes, where they promote cell lysis for virion release, and within bacterial genomes, where they serve a diversity of potential or established functions. These include (i) release of gene transfer agents, (ii) facilitation of programs of differentiation such as those that allow sporulation and spore germination, (iii) contribution to biofilm formation, (iv) promotion of responses to stress conditions, and (v) release of toxins and other proteins. There are currently 58 recognized families of holins and putative holins with members exhibiting between 1 and 4 transmembrane α-helical spanners, but many more families have yet to be discovered. Programmed cell death in animals involves holin-like proteins such as Bax and Bak that may have evolved from bacterial holins. Holin homologues have also been identified in archaea, suggesting that these proteins are ubiquitous throughout the three domains of life. Phage-mediated cell lysis of dual-membrane Gram-negative bacteria also depends on outer membrane-disrupting "spanins" that function independently of, but in conjunction with, holins and endolysins. In this minireview, we provide an overview of their modes of action and the first comprehensive summary of the many currently recognized and postulated functions and uses of these cell lysis systems. It is anticipated that future studies will result in the elucidation of many more such functions and the development of additional applications.
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23
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Programmable spin-state switching in a mixed-valence spin-crossover iron grid. Nat Commun 2014; 5:3865. [DOI: 10.1038/ncomms4865] [Citation(s) in RCA: 159] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Accepted: 04/11/2014] [Indexed: 11/08/2022] Open
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24
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Sugahara A, Tanaka N, Okazawa A, Matsushita N, Kojima N. Photochromic Property of Anionic Spiropyran with Sulfonate-substituted Indoline Moiety. CHEM LETT 2014. [DOI: 10.1246/cl.130904] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Akira Sugahara
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo
| | - Naru Tanaka
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo
| | - Atsushi Okazawa
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo
| | - Nobuyuki Matsushita
- Department of Chemistry, College of Science, Rikkyo University
- Research Center for Smart Molecules, Rikkyo University
| | - Norimichi Kojima
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo
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25
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Roberts TD, Little MA, Kershaw Cook LJ, Halcrow MA. Iron(ii) complexes of 2,6-di(1H-pyrazol-3-yl)-pyridine derivatives with hydrogen bonding and sterically bulky substituents. Dalton Trans 2014; 43:7577-88. [PMID: 24705977 DOI: 10.1039/c4dt00355a] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Thomas D Roberts
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.
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26
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Das M, Harms K, Chattopadhyay S. Novel tandem synthesis of bis(μ-NN′-tetrazolate) bridged dinuclear nickel(ii) Schiff base complex via [3 + 2] cyclo-addition at ambient condition. Dalton Trans 2014; 43:5643-7. [DOI: 10.1039/c3dt52398e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A bis(μ-NN′-tetrazolate) bridged dinuclear nickel(ii) Schiff base complex was synthesized via [3 + 2] cycloaddition reaction of 2-cyanopyrazine and sodium azide.
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Affiliation(s)
- Mithun Das
- Department of Chemistry
- Inorganic Section
- Jadavpur University
- Kolkata - 700 032, India
| | - Klaus Harms
- Fachbereich Chemie
- Philipps-Universität Marburg
- D-35032 Marburg, Germany
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27
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Liu JY, Liu ZY, Zhang LJ, Wang YY, Yang P, Wang Y, Ding B, Zhao XJ. Synthesis, structure, and characterization of a series of Ag(i), Cu(ii) and Ni(ii) complexes based on 2,5-dimethyl-1,3,4-thiodiazole. CrystEngComm 2013. [DOI: 10.1039/c3ce40672e] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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