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Ross DL, Jasniewski AJ, Ziller JW, Bominaar EL, Hendrich MP, Borovik AS. Modulation of the Bonding between Copper and a Redox-Active Ligand by Hydrogen Bonds and Its Effect on Electronic Coupling and Spin States. J Am Chem Soc 2024; 146:500-513. [PMID: 38150413 PMCID: PMC11160172 DOI: 10.1021/jacs.3c09983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
The exchange coupling of electron spins can strongly influence the properties of chemical species. The regulation of this type of electronic coupling has been explored within complexes that have multiple metal ions but to a lesser extent in complexes that pair a redox-active ligand with a single metal ion. To bridge this gap, we investigated the interplay among the structural and magnetic properties of mononuclear Cu complexes and exchange coupling between a Cu center and a redox-active ligand over three oxidation states. The computational analysis of the structural properties established a relationship between the complexes' magnetic properties and a bonding interaction involving a dx2-y2 orbital of the Cu ion and π orbital of the redox-active ligand that are close in energy. The additional bonding interaction affects the geometry around the Cu center and was found to be influenced by intramolecular H-bonds introduced by the external ligands. The ability to synthetically tune the d-π interactions using H-bonds illustrates a new type of control over the structural and magnetic properties of metal complexes.
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Affiliation(s)
- Dolores L Ross
- Department of Chemistry, 1102 Natural Science II, University of California, Irvine, California 92697, United States
| | - Andrew J Jasniewski
- Department of Molecular Biology and Biochemistry, University of California, Irvine, California 92697, United States
| | - Joseph W Ziller
- Department of Chemistry, 1102 Natural Science II, University of California, Irvine, California 92697, United States
| | - Emile L Bominaar
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Michael P Hendrich
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - A S Borovik
- Department of Chemistry, 1102 Natural Science II, University of California, Irvine, California 92697, United States
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2
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Nakamura M, Hyakutake R, Morisako S, Sasamori T, Mizuhata Y, Tokitoh N, Nakashima K, Fukumoto H, Agou T. Boron complexes of π-extended nitroxide ligands exhibiting three-state redox processes and near-infrared-II (NIR-II) absorption properties. Dalton Trans 2022; 51:13675-13680. [PMID: 36040417 DOI: 10.1039/d2dt02545k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Persistent radicals have attracted increasing attention owing to their fascinating properties, including multi-step redox and long-wavelength absorption characteristics. In this study, boron complexes with π-extended nitroxide ligands were synthesised via Buchwald-Hartwig amination reactions of the corresponding boron-nitroxide complex and diarylamines. These nitroxide complexes exhibited two-step and reversible one-electron oxidation processes, suggesting stable redox triads involving anionic aminoxide, neutral nitroxide-radical, and cationic oxoammonium ligands. Cationic boron complexes of the nitroxide radical ligands were obtained via chemical oxidation of the aminoxide complexes and structurally characterised. The cationic nitroxide-radical complexes exhibited strong absorptions at approximately 1100 nm, demonstrating their potential as near-infrared (NIR)-II-active functional dyes.
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Affiliation(s)
- Marika Nakamura
- Department of Quantum Beam Science, Graduate School of Science and Engineering, Ibaraki University, 4-12-1 Naka-narusawa, Hitachi, Ibaraki 316-8511, Japan.
| | - Risa Hyakutake
- Department of Quantum Beam Science, Graduate School of Science and Engineering, Ibaraki University, 4-12-1 Naka-narusawa, Hitachi, Ibaraki 316-8511, Japan.
| | - Shogo Morisako
- Division of Chemistry, Faculty of Pure and Applied Sciences, and Tsukuba Research Center for Energy Materials Sciences (TREMS), University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8571, Japan
| | - Takahiro Sasamori
- Division of Chemistry, Faculty of Pure and Applied Sciences, and Tsukuba Research Center for Energy Materials Sciences (TREMS), University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8571, Japan
| | - Yoshiyuki Mizuhata
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Norihiro Tokitoh
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Kouichi Nakashima
- Department of Quantum Beam Science, Graduate School of Science and Engineering, Ibaraki University, 4-12-1 Naka-narusawa, Hitachi, Ibaraki 316-8511, Japan.
| | - Hiroki Fukumoto
- Department of Quantum Beam Science, Graduate School of Science and Engineering, Ibaraki University, 4-12-1 Naka-narusawa, Hitachi, Ibaraki 316-8511, Japan.
| | - Tomohiro Agou
- Department of Quantum Beam Science, Graduate School of Science and Engineering, Ibaraki University, 4-12-1 Naka-narusawa, Hitachi, Ibaraki 316-8511, Japan.
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3
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Cho B, Swain A, Gautam R, Tomat E, Huxter VM. Time-resolved dynamics of stable open- and closed-shell neutral radical and oxidized tripyrrindione complexes. Phys Chem Chem Phys 2022; 24:15718-15725. [PMID: 35730195 DOI: 10.1039/d2cp00632d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Stable open- and closed-shell Pd(II) and Cu(II) complexes of hexaethyl tripyrrin-1,14-dione (TD1) produce triplet, doublet or singlet states depending on the metal center and the redox state of the ligand. Pd(II) and Cu(II) form neutral TD1 complexes featuring ligand-based radicals, thus resulting in doublet and triplet states, respectively. The reversible one-electron oxidation of the complexes removes an unpaired electron from the ligand, generating singlet and doublet states. The optical properties and time-resolved dynamics of these systems are studied here using steady-state and ultrafast transient absorption (pump-probe) measurements. Fast relaxation with recovery of the ground state in tens of picoseconds is observed for the copper neutral radical and oxidized complexes as well as for the palladium neutral radical complex. Significantly longer timescales are observed for the oxidized palladium complex. The ability to tune the overall spin state of the complexes through their stable open-shell configurations as well as the reversible redox activity of the tripyrrolic systems makes them particularly interesting for catalytic applications as well as exploring magnetism and conductivity properties.
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Affiliation(s)
- Byungmoon Cho
- Department of Chemistry and Biochemistry, The University of Arizona, Tucson, Arizona, 85721, USA.
| | - Alicia Swain
- Department of Chemistry and Biochemistry, The University of Arizona, Tucson, Arizona, 85721, USA.
| | - Ritika Gautam
- Department of Chemistry and Biochemistry, The University of Arizona, Tucson, Arizona, 85721, USA.
| | - Elisa Tomat
- Department of Chemistry and Biochemistry, The University of Arizona, Tucson, Arizona, 85721, USA.
| | - Vanessa M Huxter
- Department of Chemistry and Biochemistry, The University of Arizona, Tucson, Arizona, 85721, USA. .,Department of Physics, The University of Arizona, Tucson, Arizona, 85721, USA
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4
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Tretyakov EV, Ovcharenko VI, Terent'ev AO, Krylov IB, Magdesieva TV, Mazhukin DG, Gritsan NP. Conjugated nitroxide radicals. RUSSIAN CHEMICAL REVIEWS 2022. [DOI: 10.1070/rcr5025] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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5
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Molecular S = 2 High-Spin, S = 0 Low-Spin and S = 0 ⇄ 2 Spin-Transition/-Crossover Nickel(II)-Bis(nitroxide) Coordination Compounds. INORGANICS 2021. [DOI: 10.3390/inorganics9020010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Heterospin systems have a great advantage in frontier orbital engineering since they utilize a wide diversity of paramagnetic chromophores and almost infinite combinations and mutual geometries. Strong exchange couplings are expected in 3d–2p heterospin compounds, where the nitroxide (aminoxyl) oxygen atom has a direct coordination bond with a nickel(II) ion. Complex formation of nickel(II) salts and tert-butyl 2-pyridyl nitroxides afforded a discrete 2p–3d–2p triad. Ferromagnetic coupling is favored when the magnetic orbitals, nickel(II) dσ and radical π*, are arranged in a strictly orthogonal fashion, namely, a planar coordination structure is characterized. In contrast, a severe twist around the coordination bond gives an orbital overlap, resulting in antiferromagnetic coupling. Non-chelatable nitroxide ligands are available for highly twisted and practically diamagnetic complexes. Here, the Ni–O–N–Csp2 torsion (dihedral) angle is supposed to be a useful metric to describe the nickel ion dislocated out of the radical π* nodal plane. Spin-transition complexes exhibited a planar coordination structure in a high-temperature phase and a nonplanar structure in a low-temperature phase. The gradual spin transition is described as a spin equilibrium obeying the van’t Hoff law. Density functional theory calculation indicates that the energy level crossing of the high- and low-spin states. The optimized structures of diamagnetic and high-spin states well agreed with the experimental large and small torsions, respectively. The novel mechanism of the present spin transition lies in the ferro-/antiferromagnetic coupling switch. The entropy-driven mechanism is plausible after combining the results of the related copper(II)-nitroxide compounds. Attention must be paid to the coupling parameter J as a variable of temperature in the magnetic analysis of such spin-transition materials. For future work, the exchange coupling may be tuned by chemical modification and external stimulus, because it has been clarified that the parameter is sensitive to the coordination structure and actually varies from 2J/kB = +400 K to −1400 K.
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6
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Ovcharenko VI, Kuznetsova OV. New method for the synthesis of heterospin metal complexes with nitroxides. RUSSIAN CHEMICAL REVIEWS 2020. [DOI: 10.1070/rcr4981] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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7
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Kyoden Y, Ishida T. A Hidden Coordination-Bond Torsional Deformation as a Sign of Possible Spin Transition in Nickel(II)-Bis(nitroxide) Compounds. Molecules 2020; 25:E3790. [PMID: 32825395 PMCID: PMC7503645 DOI: 10.3390/molecules25173790] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 08/13/2020] [Accepted: 08/18/2020] [Indexed: 11/17/2022] Open
Abstract
Complex formation of nickel(II) tetrafluoroborate and tert-butyl 5-phenyl-2-pyridyl nitroxide (phpyNO) in the presence of sodium cyanate gave a discrete molecule [Ni(phpyNO)2(X)2] (X = NCO). The Ni-O-N-Csp2 torsion angles were reduced on heating; 33.5(5)° and 36.2(4)° at 100 K vs. 25.7(10)° and 32.3(11)° at 400 K. The magnetic behavior was almost diamagnetic below ca. 100 K, and the χmT value reached 1.04 cm3 K mol-1 at 400 K. An analysis using the van't Hoff equation indicates a possible spin transition at T1/2 >> 400 K. Density functional theory calculation shows that the singlet-quintet energy gap decreases as the structural change from 100 to 400 K. The geometry optimization results suggest that the diamagnetic state has the Ni-O-N-Csp2 torsion angles of 32.7° while the Stotal = 2 state has those of 11.9°. The latter could not be experimentally observed even at 400 K. After overviewing the results on the known X = Br, Cl, and NCS derivatives, the magnetic behavior is described in a common phase diagram. The Br and Cl compounds undergo the energy level crossing of the high-/low-spin states, but the NCS and NCO compounds do not in a conventional experimental temperature range. The spin transition mechanism in this series involves the exchange coupling switch between ferro- and antiferromagnetic interactions, corresponding to the high- and low-spin phases, respectively.
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Affiliation(s)
| | - Takayuki Ishida
- Department of Engineering Science, The University of Electro-Communications, Chofu, Tokyo 182-8585, Japan;
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8
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Greatorex S, Fokin SV, Kulmaczewski R, Yamada M, Cespedes O, Yoshinari N, Konno T, Sproules S, Ovcharenko VI, Halcrow MA. Modulating the Magnetic Properties of Copper(II)/Nitroxyl Heterospin Complexes by Suppression of the Jahn–Teller Distortion. Inorg Chem 2020; 59:8657-8662. [DOI: 10.1021/acs.inorgchem.0c01345] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sam Greatorex
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Sergey V. Fokin
- International Tomography Center, Siberian Branch of Russian Academy of Science, Institutskaya Strasse 3a, Novosibirsk 630090, Russia
| | - Rafal Kulmaczewski
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
| | - Mihoko Yamada
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
| | - Oscar Cespedes
- School of Physics and Astronomy, University of Leeds, EC Stoner Building, Leeds LS2 9JT, U.K
| | - Nobuto Yoshinari
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Takumi Konno
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Stephen Sproules
- WestCHEM, School of Chemistry, University of Glasgow, Glasgow G12 8QQ, U.K
| | - Victor I. Ovcharenko
- International Tomography Center, Siberian Branch of Russian Academy of Science, Institutskaya Strasse 3a, Novosibirsk 630090, Russia
| | - Malcolm A. Halcrow
- School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
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9
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Kyoden Y, Ishida T. An indication of spin-transition accompanied by an order-disorder structural transformation in [Ni(phpyNO)2(NCS)2] (phpyNO = tert-butyl 5-phenyl-2-pyridyl nitroxide). RSC Adv 2020; 10:16009-16015. [PMID: 35493632 PMCID: PMC9052934 DOI: 10.1039/d0ra02041a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 04/03/2020] [Indexed: 11/29/2022] Open
Abstract
Reaction of nickel(ii) thiocyanate and tert-butyl 5-phenyl-2-pyridyl nitroxide (phpyNO) afforded a 2p–3d–2p heterospin triad [Ni(phpyNO)2(NCS)2]. The compound crystallizes in the orthorhombic Pbcn space group. The whole molecule is crystallographically independent. The torsion angles around Ni–O–N–C2py are 26.8(4) and 27.3(4)° at 400 K, indicating appreciable orbital overlaps of the radical π* and nickel(ii) 3dx2−y2/3dz2 orbitals. In a low-temperature region, the torsion was enhanced, and the space group changed to monoclinic P21/c with a doubled asymmetric unit volume. The χmT value was practically null below ca. 140 K and, on heating to 400 K, gradually increased and reached 1.30 cm3 K mol−1. A van't Hoff analysis suggests a spin transition at T1/2 = 530(20) K. Density functional theory calculation reproduced ground Stotal = 0 with singlet-triplet gaps of 910 and 1263 K for the 140 K structure, and the gap was reduced to 297 K at 400 K. Consequently, the present compound can be considered as an incomplete spin-crossover material, as a result of T1/2 located above the experimental temperature window. The exchange coupling in [Ni(phpyNO)2(NCS)2] is strongly antiferromagnetic in a low-temperature structure whilst moderately antiferromagnetic in a high-temperature structure.![]()
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Affiliation(s)
- Yukiya Kyoden
- Department of Engineering Science
- The University of Electro-Communications
- Chofu
- Japan
| | - Takayuki Ishida
- Department of Engineering Science
- The University of Electro-Communications
- Chofu
- Japan
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10
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Tumanov SV, Veber SL, Tolstikov SE, Artiukhova NA, Ovcharenko VI, Fedin MV. Exchange interactions in photoinduced magnetostructural states of copper( ii)–nitroxide spin dyads. Dalton Trans 2020; 49:5851-5858. [DOI: 10.1039/d0dt00706d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
We investigate intra- and intercluster exchange couplings in photoinduced states of copper(ii)–nitroxide based molecular magnets (“breathing crystals”) using variable-temperature EPR spectroscopy.
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Affiliation(s)
- Sergey V. Tumanov
- International Tomography Center SB RAS
- 630090 Novosibirsk
- Russia
- Novosibirsk State University
- 630090 Novosibirsk
| | - Sergey L. Veber
- International Tomography Center SB RAS
- 630090 Novosibirsk
- Russia
- Novosibirsk State University
- 630090 Novosibirsk
| | | | | | | | - Matvey V. Fedin
- International Tomography Center SB RAS
- 630090 Novosibirsk
- Russia
- Novosibirsk State University
- 630090 Novosibirsk
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11
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Kyoden Y, Homma Y, Ishida T. High-Spin and Incomplete Spin-Crossover Polymorphs in Doubly Chelated [Ni(L) 2Br 2] (L = tert-Butyl 5-Phenyl-2-pyridyl Nitroxide). Inorg Chem 2019; 58:10743-10755. [PMID: 31368687 DOI: 10.1021/acs.inorgchem.9b00885] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Complexation of nickel(II) bromide with tert-butyl 5-phenyl-2-pyridyl nitroxide (phpyNO) gave two morphs of doubly chelated [Ni(phpyNO)2Br2] as a 2p-3d-2p heterospin triad. The α phase crystallizes in the orthorhombic space group Pbcn. An asymmetric unit involves a half-molecule. The torsion angle around Ni-O-N-C2py is as small as 6.5(3)° at 100 K and 7.0(6)° at 400 K, guaranteeing an orthogonal arrangement between the magnetic radical π* and metal 3dx2-y2 and 3dz2 orbitals. Magnetic study revealed the high-spin ground state with the exchange coupling constant 2J/kB = +288(5) K, on the basis of a symmetrical spin Hamiltonian. The β phase crystallizes in the monoclinic space group P21/n. The whole molecule is an independent unit. The Ni-O-N-C2py torsion angles are 24.2(6) and 37.2(5)° at 100 K and 10.4(7) and 25.9(6)° at 400 K. A magnetic study revealed a very gradual and nonhysteretic spin transition. An analysis based on the van't Hoff equation gave a successful fit with the spin-crossover temperature of 134(1) K, although the susceptibility did not reach the theoretical high-spin value at 400 K. Density functional theory calculation on the β phase showed ground Stotal = 0 in the low-temperature structure while Stotal = 2 in the high-temperature structure, supporting the synchronized exchange coupling switch on both sides. Consequently, the β phase can be recognized as an "incomplete spin crossover" material, as a result of conflicting thermal depopulation effects in a high-temperature region.
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Affiliation(s)
- Yukiya Kyoden
- Department of Engineering Science , The University of Electro-Communications , Chofu, Tokyo 182-8585 , Japan
| | - Yuta Homma
- Department of Engineering Science , The University of Electro-Communications , Chofu, Tokyo 182-8585 , Japan
| | - Takayuki Ishida
- Department of Engineering Science , The University of Electro-Communications , Chofu, Tokyo 182-8585 , Japan
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12
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Ovcharenko V, Romanenko G, Polushkin A, Letyagin G, Bogomyakov A, Fedin M, Maryunina K, Nishihara S, Inoue K, Petrova M, Morozov V, Zueva E. Pressure-Controlled Migration of Paramagnetic Centers in a Heterospin Crystal. Inorg Chem 2019; 58:9187-9194. [PMID: 31241906 DOI: 10.1021/acs.inorgchem.9b00815] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A study of the single-crystal-to-single-crystal transformation induced by temperature variation for the chain polymer Cu(II) complex with nitronyl nitroxide showed that an increase in the hydrostatic pressure of up to ∼0.07 GPa completely changes the intracrystalline displacements of molecules relative to one another. This, in turn, significantly affects the interaction energy of the unpaired electrons of the paramagnetic centers and hence the form of the temperature dependence of the magnetic susceptibility χT. The cooling of crystals under normal conditions causes a rearrangement of the intrachain exchange clusters {>N-•O-Cu(II)-O•-N<} accompanied by a shortening of the distances between the paramagnetic centers. This changes the character of exchange interactions and generates multistage spin transitions. An increase in the hydrostatic pressure leads to a drastic change in the O···O distances between the nitroxyl fragments of adjacent chains, an increase in the antiferromagnetic exchange between them, and complete suppression of spin transitions.
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Affiliation(s)
- Victor Ovcharenko
- International Tomography Center SB RAS , 3A Institutskaya Street , Novosibirsk 630090 , Russia
| | - Galina Romanenko
- International Tomography Center SB RAS , 3A Institutskaya Street , Novosibirsk 630090 , Russia
| | - Alexey Polushkin
- International Tomography Center SB RAS , 3A Institutskaya Street , Novosibirsk 630090 , Russia
| | - Gleb Letyagin
- International Tomography Center SB RAS , 3A Institutskaya Street , Novosibirsk 630090 , Russia.,Novosibirsk State University , Pirogova Street 1 , Novosibirsk 630090 , Russia
| | - Artem Bogomyakov
- International Tomography Center SB RAS , 3A Institutskaya Street , Novosibirsk 630090 , Russia
| | - Matvey Fedin
- International Tomography Center SB RAS , 3A Institutskaya Street , Novosibirsk 630090 , Russia
| | | | | | | | - Marina Petrova
- International Tomography Center SB RAS , 3A Institutskaya Street , Novosibirsk 630090 , Russia
| | - Vitaly Morozov
- International Tomography Center SB RAS , 3A Institutskaya Street , Novosibirsk 630090 , Russia.,Novosibirsk State University , Pirogova Street 1 , Novosibirsk 630090 , Russia
| | - Ekaterina Zueva
- Department of Inorganic Chemistry , Kazan National Research Technological University , 68 K. Marx Street , Kazan 420015 , Russia.,A. E. Arbuzov Institute of Organic and Physical Chemistry , Kazan Scientific Centre of the Russian Academy of Sciences , Arbuzov Street 8 , Kazan 420008 , Russian.,Kazan Federal University , Kremlyovskaya Street 18 , Kazan 420008 , Russia
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13
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Kashiro A, Kyoden Y, Okazawa A, Ishida T. Moving Organic Molecules in Crystalline Solids: Gradual Structural Transition and Spin Transition/Crossover. J SYN ORG CHEM JPN 2019. [DOI: 10.5059/yukigoseikyokaishi.77.684] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | | | | | - Takayuki Ishida
- Department of Engineering Science, The University of Electro-Communications
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14
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15
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Jia X, Peng P, Cui J, Xin N, Huang X. Four N,O-Bidentate-Chelated Ligand-Tunable Copper(II) Complexes: Synthesis, Structural Characterization and Exceptional Catalytic Properties for Chan-Lam Coupling Reactions. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800153] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Xuefeng Jia
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education, School of Chemical and Material Science; Shanxi Normal University; Linfen, Shanxi Province 041004 China
| | - Pai Peng
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education, School of Chemical and Material Science; Shanxi Normal University; Linfen, Shanxi Province 041004 China
| | - Jing Cui
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education, School of Chemical and Material Science; Shanxi Normal University; Linfen, Shanxi Province 041004 China
| | - Nana Xin
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology; School of Chemistry & Chemical Engineering; Liaocheng University; Liaocheng Shandong Province 252059 China
| | - Xianqiang Huang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology; School of Chemistry & Chemical Engineering; Liaocheng University; Liaocheng Shandong Province 252059 China
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16
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Cobalt(II) Terpyridin-4′-yl Nitroxide Complex as an Exchange-Coupled Spin-Crossover Material. CRYSTALS 2018. [DOI: 10.3390/cryst8040155] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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17
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Okazawa A, Terakado Y, Ishida T, Kojima N. A triplet biradical with double bidentate sites based on tert-butyl pyridyl nitroxide as a candidate for strong ferromagnetic couplers. NEW J CHEM 2018. [DOI: 10.1039/c8nj04180f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A new triplet biradical having two chelatable nitroxide sites and a strong intramolecular ferromagnetic coupling through a “meta–para” bipyridyl linker.
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Affiliation(s)
- Atsushi Okazawa
- Department of Basic Science
- Graduate School of Arts and Sciences
- The University of Tokyo
- Tokyo 153-8902
- Japan
| | - Yutaro Terakado
- Department of Engineering Science
- The University of Electro-Communications
- Tokyo 182-8585
- Japan
| | - Takayuki Ishida
- Department of Engineering Science
- The University of Electro-Communications
- Tokyo 182-8585
- Japan
| | - Norimichi Kojima
- Toyota Physical and Chemical Research Institute
- Aichi 480-1192
- Japan
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18
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Ovcharenko V, Kuznetsova O, Fursova E, Letyagin G, Romanenko G, Bogomyakov A, Zueva E. Simultaneous Introduction of Two Nitroxides in the Reaction: A New Approach to the Synthesis of Heterospin Complexes. Inorg Chem 2017; 56:14567-14576. [PMID: 29131644 DOI: 10.1021/acs.inorgchem.7b02308] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new approach to the synthesis of multispin compounds has been developed, namely, the simultaneous introduction of two different stable nitroxides (nitronyl nitroxide and imino nitroxide) in a reaction with a metal ion. An important characteristic of the new method is that nitronyl nitroxide and imino nitroxide introduced in the reaction with the metal are the products of different series; i.e., the nitronyl nitroxide molecule differs from the imino nitroxide molecule not only in one additional oxygen molecule per molecule but also in another substituent in the side chain of the organic paramagnet. This possibility was demonstrated on the synthesis of multispin compounds [Ni2(A1)(L2)2(Piv)(MeOH)], [Ni2(L1)(A2)2(Piv)(H2O)], [Co2(A1)(L2)2(Piv)(MeOH)], and [Co3(L1)2(A2)2(Piv)2], in which Ln and An differ in the substituent in the phenyl ring. The number of multispin compounds that can be synthesized by the proposed method is almost unlimited. The heterospin complexes of transition metals with coordinated nitronyl nitroxide and imino nitroxide in one molecule contain energy-different exchange interaction channels that differ in both magnitude and sign, as confirmed by the quantum-chemical analysis of exchange channels in [Ni(B1)(B2)2](NO3)2. The series of mixed-radical complexes may include compounds with nontrivial magnetic properties such as [Co2(A1)(L2)2(Piv)(MeOH)], which experiences bulk magnetic ordering below 3.5 K.
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Affiliation(s)
- Victor Ovcharenko
- International Tomography Center , Institutskaya Street 3a, Novosibirsk 630090, Russian Federation
| | - Olga Kuznetsova
- International Tomography Center , Institutskaya Street 3a, Novosibirsk 630090, Russian Federation
| | - Elena Fursova
- International Tomography Center , Institutskaya Street 3a, Novosibirsk 630090, Russian Federation
| | - Gleb Letyagin
- International Tomography Center , Institutskaya Street 3a, Novosibirsk 630090, Russian Federation
| | - Galina Romanenko
- International Tomography Center , Institutskaya Street 3a, Novosibirsk 630090, Russian Federation
| | - Artem Bogomyakov
- International Tomography Center , Institutskaya Street 3a, Novosibirsk 630090, Russian Federation
| | - Ekaterina Zueva
- Kazan National Research Technological University , 68 K. Marx Street, Kazan 420015, Russian Federation
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19
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Munzeiwa WA, Omondi B, Nyamori VO. Synthesis and polymerization kinetics of ε-caprolactone and ʟ-lactide to low molecular weight polyesters catalyzed by Zn(II) and Cu(II) N -hydroxy- N , N ′-diarylformamidine complexes. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.09.029] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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20
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Tumanov SV, Veber SL, Tolstikov SE, Artiukhova NA, Romanenko GV, Ovcharenko VI, Fedin MV. Light-Induced Spin State Switching and Relaxation in Spin Pairs of Copper(II)–Nitroxide Based Molecular Magnets. Inorg Chem 2017; 56:11729-11737. [DOI: 10.1021/acs.inorgchem.7b01689] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sergey V. Tumanov
- International Tomography Center SB RAS, Institutskaya
Str. 3a, 630090 Novosibirsk, Russia
- Novosibirsk State University, Pirogova
Str. 2, 630090 Novosibirsk, Russia
| | - Sergey L. Veber
- International Tomography Center SB RAS, Institutskaya
Str. 3a, 630090 Novosibirsk, Russia
- Novosibirsk State University, Pirogova
Str. 2, 630090 Novosibirsk, Russia
| | | | - Natalia A. Artiukhova
- International Tomography Center SB RAS, Institutskaya
Str. 3a, 630090 Novosibirsk, Russia
| | - Galina V. Romanenko
- International Tomography Center SB RAS, Institutskaya
Str. 3a, 630090 Novosibirsk, Russia
| | - Victor I. Ovcharenko
- International Tomography Center SB RAS, Institutskaya
Str. 3a, 630090 Novosibirsk, Russia
| | - Matvey V. Fedin
- International Tomography Center SB RAS, Institutskaya
Str. 3a, 630090 Novosibirsk, Russia
- Novosibirsk State University, Pirogova
Str. 2, 630090 Novosibirsk, Russia
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21
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Gautam R, Astashkin AV, Chang TM, Shearer J, Tomat E. Interactions of Metal-Based and Ligand-Based Electronic Spins in Neutral Tripyrrindione π Dimers. Inorg Chem 2017; 56:6755-6762. [PMID: 28497967 DOI: 10.1021/acs.inorgchem.7b01030] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The ability of tetrapyrrolic macrocycles to stabilize unpaired electrons and engage in π-π interactions is essential for many electron-transfer processes in biology and materials engineering. Herein, we demonstrate that the formation of π dimers is recapitulated in complexes of a linear tripyrrolic analogue of naturally occurring pigments derived from heme decomposition. Hexaethyltripyrrindione (H3TD1) coordinates divalent transition metals (i.e., Pd, Cu, Ni) as a stable dianionic radical and was recently described as a robust redox-active ligand. The resulting planar complexes, which feature a delocalized ligand-based electronic spin, are stable at room temperature in air and support ligand-based one-electron processes. We detail the dimerization of neutral tripyrrindione complexes in solution through electron paramagnetic resonance (EPR) and visible absorption spectroscopic methods. Variable-temperature measurements using both EPR and absorption techniques allowed determination of the thermodynamic parameters of π dimerization, which resemble those previously reported for porphyrin radical cations. The inferred electronic structure, featuring coupling of ligand-based electronic spins in the π dimers, is supported by density functional theory (DFT) calculations.
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Affiliation(s)
- Ritika Gautam
- Department of Chemistry and Biochemistry, The University of Arizona , Tucson, Arizona 85721, United States
| | - Andrei V Astashkin
- Department of Chemistry and Biochemistry, The University of Arizona , Tucson, Arizona 85721, United States
| | - Tsuhen M Chang
- Department of Chemistry and Biochemistry, The University of Arizona , Tucson, Arizona 85721, United States
| | - Jason Shearer
- Department of Chemistry, University of Nevada , Reno, Nevada 89577, United States
| | - Elisa Tomat
- Department of Chemistry and Biochemistry, The University of Arizona , Tucson, Arizona 85721, United States
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22
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Zueva EM, Tretyakov EV, Fokin SV, Romanenko GV, Tkacheva AO, Bogomyakov AS, Petrova OV, Trofimov BA, Sagdeev RZ, Ovcharenko VI. Stereo sensitivity of exchange interactions in NiII and CuII heterospin complexes with 5-formylpyrrolyl-substituted nitroxides. Russ Chem Bull 2016. [DOI: 10.1007/s11172-016-1353-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Kanetomo T, Yoshitake T, Ishida T. Strongest Ferromagnetic Coupling in Designed Gadolinium(III)–Nitroxide Coordination Compounds. Inorg Chem 2016; 55:8140-6. [DOI: 10.1021/acs.inorgchem.6b01072] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Takuya Kanetomo
- Department
of Engineering Science, The University of Electro-Communications, Chofu, Tokyo 182-8585, Japan
| | - Toru Yoshitake
- Department
of Engineering Science, The University of Electro-Communications, Chofu, Tokyo 182-8585, Japan
| | - Takayuki Ishida
- Department
of Engineering Science, The University of Electro-Communications, Chofu, Tokyo 182-8585, Japan
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24
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Ovcharenko V, Fokin S, Chubakova E, Romanenko G, Bogomyakov A, Dobrokhotova Z, Lukzen N, Morozov V, Petrova M, Petrova M, Zueva E, Rozentsveig I, Rudyakova E, Levkovskaya G, Sagdeev R. A Copper–Nitroxide Adduct Exhibiting Separate Single Crystal-to-Single Crystal Polymerization–Depolymerization and Spin Crossover Transitions. Inorg Chem 2016; 55:5853-61. [PMID: 27227270 DOI: 10.1021/acs.inorgchem.6b00140] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Victor Ovcharenko
- International
Tomography Center, SB RAS, Institutskaya Str., 3a Novosibirsk 630090, Russian Federation
| | - Sergey Fokin
- International
Tomography Center, SB RAS, Institutskaya Str., 3a Novosibirsk 630090, Russian Federation
| | - Elvina Chubakova
- International
Tomography Center, SB RAS, Institutskaya Str., 3a Novosibirsk 630090, Russian Federation
| | - Galina Romanenko
- International
Tomography Center, SB RAS, Institutskaya Str., 3a Novosibirsk 630090, Russian Federation
| | - Artem Bogomyakov
- International
Tomography Center, SB RAS, Institutskaya Str., 3a Novosibirsk 630090, Russian Federation
| | - Zhanna Dobrokhotova
- N.
S. Kurnakov Institute of General and Inorganic Chemistry, RAS, 31 Leninsky Ave., Moscow 119991, Russian Federation
| | - Nikita Lukzen
- International
Tomography Center, SB RAS, Institutskaya Str., 3a Novosibirsk 630090, Russian Federation
| | - Vitaly Morozov
- International
Tomography Center, SB RAS, Institutskaya Str., 3a Novosibirsk 630090, Russian Federation
| | - Marina Petrova
- International
Tomography Center, SB RAS, Institutskaya Str., 3a Novosibirsk 630090, Russian Federation
| | - Maria Petrova
- Kazan National Research Technological University, 68 K. Marx Str., Kazan 420015, Russian Federation
| | - Ekaterina Zueva
- Kazan National Research Technological University, 68 K. Marx Str., Kazan 420015, Russian Federation
| | - Igor Rozentsveig
- A.
E. Favorsky Irkutsk Institute of Chemistry, SB RAS, 1 Favorsky Str., Irkutsk 664033, Russian Federation
| | - Elena Rudyakova
- A.
E. Favorsky Irkutsk Institute of Chemistry, SB RAS, 1 Favorsky Str., Irkutsk 664033, Russian Federation
| | - Galina Levkovskaya
- A.
E. Favorsky Irkutsk Institute of Chemistry, SB RAS, 1 Favorsky Str., Irkutsk 664033, Russian Federation
| | - Renad Sagdeev
- Kazan (Volga Region) Federal University, 18 Kremlevskaya Str., Kazan 420008, Russian Federation
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25
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Heterospin MnIII complex as a reaction product of the redox-induced change in the ligand coordination mode. Russ Chem Bull 2016. [DOI: 10.1007/s11172-016-1432-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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26
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Kawakami H, Tonegawa A, Ishida T. A designed room-temperature triplet ligand from pyridine-2,6-diyl bis(tert-butyl nitroxide). Dalton Trans 2016; 45:1306-9. [PMID: 26615801 DOI: 10.1039/c5dt04218f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The magnetic study on newly developed 4-mesitylpyridine-2,6-diyl bis(tert-butyl nitroxide) shows that almost the whole population has a ground triplet state at room temperature, and the ability of complex formation as a tridentate triplet ligand was proven with a diamagnetic yttrium(iii) ion.
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Affiliation(s)
- Hinako Kawakami
- Department of Engineering Science, The University of Electro-Communications, Chofu, Tokyo 182-8585, Japan.
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27
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28
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Jung J, Guennic BL, Fedin MV, Ovcharenko VI, Calzado CJ. Mechanism of Magnetostructural Transitions in Copper-Nitroxide-Based Switchable Molecular Magnets: Insights from ab Initio Quantum Chemistry Calculations. Inorg Chem 2015; 54:6891-9. [PMID: 26125503 DOI: 10.1021/acs.inorgchem.5b00794] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The gradual magnetostructural transition in breathing crystals based on copper(II) and pyrazolyl-substituted nitronyl nitroxides has been analyzed by means of DDCI quantum chemistry calculations. The magnetic coupling constants (J) within the spin triads of Cu(hfac)2L(Bu)·0.5C8H18 have been evaluated for the X-ray structures reported at different temperatures. The coupling is strongly antiferromagnetic at low temperature and becomes ferromagnetic when the temperature increases. The intercluster magnetic coupling (J') is antiferromagnetic and shows a marked dependence on temperature. The magnetostructural transition can be reproduced using the calculated J values for each structure in the simulation of the magnetic susceptibility. However, the μ(T) curve can be improved nicely by considering the coexistence of two phases in the transition region, whose ratio varies with temperature corresponding to both the weakly and strongly coupled spin states. These results complement a recent VT-FTIR study on the parent Cu(hfac)2L(Pr) compound with a gradual magnetostructural transition.
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Affiliation(s)
- Julie Jung
- †Departamento de Química Física, Universidad de Sevilla, Sevilla, Spain.,‡Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, 263 Avenue du Général Leclerc, 35042 Cedex Rennes, France
| | - Boris Le Guennic
- ‡Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, 263 Avenue du Général Leclerc, 35042 Cedex Rennes, France
| | - Matvey V Fedin
- §International Tomography Center, Siberian Branch of Russian Academy of Science and Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Victor I Ovcharenko
- §International Tomography Center, Siberian Branch of Russian Academy of Science and Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Carmen J Calzado
- †Departamento de Química Física, Universidad de Sevilla, Sevilla, Spain
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29
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Veber SL, Suturina EA, Fedin MV, Boldyrev KN, Maryunina KY, Sagdeev RZ, Ovcharenko VI, Gritsan NP, Bagryanskaya EG. FTIR Study of Thermally Induced Magnetostructural Transitions in Breathing Crystals. Inorg Chem 2015; 54:3446-55. [DOI: 10.1021/ic5031153] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | | | - Renad Z. Sagdeev
- Kazan (Volga Region) Federal University, Kremlevskaya St. 18, 420008 Kazan, Russia
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30
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Fedin MV, Veber SL, Bagryanskaya EG, Romanenko GV, Ovcharenko VI. Spatial distribution of phases during gradual magnetostructural transitions in copper(ii)–nitroxide based molecular magnets. Dalton Trans 2015; 44:18823-30. [DOI: 10.1039/c5dt03441h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A thorough analysis of EPR and XRD data led to conclusions on the spatial distribution of phases in copper–nitroxide molecular magnets.
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Affiliation(s)
- Matvey V. Fedin
- International Tomography Center SB RAS
- Novosibirsk
- Russia
- Novosibirsk State University
- Novosibirsk
| | - Sergey L. Veber
- International Tomography Center SB RAS
- Novosibirsk
- Russia
- Novosibirsk State University
- Novosibirsk
| | - Elena G. Bagryanskaya
- Novosibirsk State University
- Novosibirsk
- Russia
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS
- Novosibirsk
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31
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Ovcharenko V, Kuznetsova O, Fursova E, Romanenko G, Polushkin A, Sagdeev R. Redox-Induced Change in the Ligand Coordination Mode. Inorg Chem 2014; 53:10033-5. [DOI: 10.1021/ic501787m] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Victor Ovcharenko
- International
Tomography Centre, Russian Academy of Sciences, 630090 Novosibirsk, Russian Federation
| | - Olga Kuznetsova
- International
Tomography Centre, Russian Academy of Sciences, 630090 Novosibirsk, Russian Federation
| | - Elena Fursova
- International
Tomography Centre, Russian Academy of Sciences, 630090 Novosibirsk, Russian Federation
| | - Galina Romanenko
- International
Tomography Centre, Russian Academy of Sciences, 630090 Novosibirsk, Russian Federation
| | - Alexey Polushkin
- International
Tomography Centre, Russian Academy of Sciences, 630090 Novosibirsk, Russian Federation
| | - Renad Sagdeev
- Kazan (Volga Region) Federal University, 420008 Kazan, Russian Federation
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32
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Barskaya IY, Tretyakov EV, Sagdeev RZ, Ovcharenko VI, Bagryanskaya EG, Maryunina KY, Takui T, Sato K, Fedin MV. Photoswitching of a Thermally Unswitchable Molecular Magnet Cu(hfac)2Li-Pr Evidenced by Steady-State and Time-Resolved Electron Paramagnetic Resonance. J Am Chem Soc 2014; 136:10132-8. [DOI: 10.1021/ja504774q] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Irina Yu. Barskaya
- International Tomography Center SB RAS, Institutskaya str. 3a, 630090 Novosibirsk, Russia
- Novosibirsk State University, Pirogova
str.2, 630090 Novosibirsk, Russia
| | - Evgeny V. Tretyakov
- International Tomography Center SB RAS, Institutskaya str. 3a, 630090 Novosibirsk, Russia
| | - Renad Z. Sagdeev
- International Tomography Center SB RAS, Institutskaya str. 3a, 630090 Novosibirsk, Russia
- Kazan (Volga Region) Federal University, Kremlevskaya St. 18, 420008 Kazan, Russia
| | - Victor I. Ovcharenko
- International Tomography Center SB RAS, Institutskaya str. 3a, 630090 Novosibirsk, Russia
| | - Elena G. Bagryanskaya
- International Tomography Center SB RAS, Institutskaya str. 3a, 630090 Novosibirsk, Russia
- Novosibirsk State University, Pirogova
str.2, 630090 Novosibirsk, Russia
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS, Pr. Lavrentjeva 16, 630090 Novosibirsk, Russia
| | - Kseniya Yu. Maryunina
- International Tomography Center SB RAS, Institutskaya str. 3a, 630090 Novosibirsk, Russia
- Department
of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - Takeji Takui
- Department
of Chemistry and Molecular Materials Science, Graduate School of Science, Osaka City University, Osaka 558-8585, Japan
- FIRST-Quantum Information Processing Project, JSPS, Tokyo 101-8430, Japan
| | - Kazunobu Sato
- Department
of Chemistry and Molecular Materials Science, Graduate School of Science, Osaka City University, Osaka 558-8585, Japan
- FIRST-Quantum Information Processing Project, JSPS, Tokyo 101-8430, Japan
| | - Matvey V. Fedin
- International Tomography Center SB RAS, Institutskaya str. 3a, 630090 Novosibirsk, Russia
- Novosibirsk State University, Pirogova
str.2, 630090 Novosibirsk, Russia
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33
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Sasmal A, Garribba E, Rizzoli C, Mitra S. Reversible Switching of Electronic Ground State in a Pentacoordinated Cu(II) 1D Cationic Polymer and Structural Diversity. Inorg Chem 2014; 53:6665-74. [DOI: 10.1021/ic500377w] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ashok Sasmal
- Department
of Chemistry, Jadavpur University, Raja S.C. Mullick Road, Kolkata-700032, West Bengal, India
| | - Eugenio Garribba
- Department of Chemistry
and Pharmacy, and Center for Biotechnology Development and Biodiversity
Research, University of Sassari, Via Vienna 2, I-07100 Sassari, Italy
| | - Corrado Rizzoli
- Dipartimento di Chimica, Universitá degli Studi di Parma, Parco Area delle Scienze 17/A I-43124 Parma, Italy
| | - Samiran Mitra
- Department
of Chemistry, Jadavpur University, Raja S.C. Mullick Road, Kolkata-700032, West Bengal, India
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34
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Spin transition in the molecular heterospin complex of Cu(hfac)2 with 4,4,5,5-tetramethyl-2-(1-methylpyrazol-5-yl)-4,5-dihydroimidazole-1-oxyl 3-oxide. Russ Chem Bull 2014. [DOI: 10.1007/s11172-013-0089-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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35
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Ishida T, Murakami R, Kanetomo T, Nojiri H. Magnetic study on radical-gadolinium(III) complexes. Relationship between the exchange coupling and coordination structure. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.04.004] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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36
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Liu KM, Zhang F, Duan XF. 1,2-Addition of Alkyl Grignard Reagents to the Nitro Group: Simple Access to 2-[Alkyl(hydroxy)amino]pyridineN-Oxides and 2-AlkylaminopyridineN-Oxides. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300801] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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37
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Drozdyuk IY, Tolstikov SE, Tretyakov EV, Veber SL, Ovcharenko VI, Sagdeev RZ, Bagryanskaya EG, Fedin MV. Light-Induced Magnetostructural Anomalies in a Polymer Chain Complex of Cu(hfac)2 with tert-Butylpyrazolylnitroxides. J Phys Chem A 2013; 117:6483-8. [DOI: 10.1021/jp403977n] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Irina Yu. Drozdyuk
- International Tomography Center SB RAS, Institutskaya Street 3a, 630090 Novosibirsk,
Russia
| | | | - Evgeny V. Tretyakov
- International Tomography Center SB RAS, Institutskaya Street 3a, 630090 Novosibirsk,
Russia
| | - Sergey L. Veber
- International Tomography Center SB RAS, Institutskaya Street 3a, 630090 Novosibirsk,
Russia
| | - Victor I. Ovcharenko
- International Tomography Center SB RAS, Institutskaya Street 3a, 630090 Novosibirsk,
Russia
| | - Renad Z. Sagdeev
- International Tomography Center SB RAS, Institutskaya Street 3a, 630090 Novosibirsk,
Russia
| | - Elena G. Bagryanskaya
- International Tomography Center SB RAS, Institutskaya Street 3a, 630090 Novosibirsk,
Russia
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS, Pr.
Lavrentjeva 9, 630090 Novosibirsk,
Russia
| | - Matvey V. Fedin
- International Tomography Center SB RAS, Institutskaya Street 3a, 630090 Novosibirsk,
Russia
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38
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Morozov VA. Cooperative spin-crossover-like transitions in the inhomogeneous chain of exchange clusters. Phys Chem Chem Phys 2013; 15:9931-9. [PMID: 23677133 DOI: 10.1039/c3cp50689d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A statistical theory of temperature-induced spin-crossover-like transitions has been developed for spin chains with a few exchange clusters in a unit cell. Using static magnetic susceptibility measurements, a general expression for the effective magnetic moment μ(eff) of exchange clusters is obtained for an arbitrary structure of cluster terms. For heterospin Cu(hfac)2L(R) complexes ("breathing crystals") with a "head-to-head" chain motif, a two-point approximation for a partition function of the Jahn-Teller Cu(+2) paramagnetic center (spin 1/2) is suggested. Theoretical results are compared with available experimental data on thermal spin-crossover-like transitions in the "breathing crystal" compounds. It is shown that the model developed is able to successfully describe both of the cases of smooth and abrupt (cooperative) spin transitions for chains of three-spin exchange clusters. Spin-crossover-like transitions of a new type with step-wise changes in a positive exchange integral are predicted.
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Affiliation(s)
- Vitaliy A Morozov
- International Tomography Centre of Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russian Federation.
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39
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Gass IA, Tewary S, Nafady A, Chilton NF, Gartshore CJ, Asadi M, Lupton DW, Moubaraki B, Bond AM, Boas JF, Guo SX, Rajaraman G, Murray KS. Observation of Ferromagnetic Exchange, Spin Crossover, Reductively Induced Oxidation, and Field-Induced Slow Magnetic Relaxation in Monomeric Cobalt Nitroxides. Inorg Chem 2013; 52:7557-72. [DOI: 10.1021/ic400565h] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Ian A. Gass
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Subrata Tewary
- Department
of Chemistry, Indian Institute of Technology—Bombay, Powai, Mumbai, India
| | - Ayman Nafady
- Department of Chemistry, King Saud University, P.O. Box 2455, Riyadh−11451, Kingdom of Saudi Arabia
| | | | | | - Mousa Asadi
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - David W. Lupton
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Boujemaa Moubaraki
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Alan M. Bond
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - John F. Boas
- School of Physics, Monash University,
Clayton, Victoria 3800, Australia
| | - Si-Xuan Guo
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Gopalan Rajaraman
- Department
of Chemistry, Indian Institute of Technology—Bombay, Powai, Mumbai, India
| | - Keith S. Murray
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
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40
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Homma Y, Okazawa A, Ishida T. Ground triplet pyrimidine-4,6-diyl bis(tert-butyl nitroxide) as a paramagnetic building block for metal–organic frameworks. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.04.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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41
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Phase transitions in the solvate of the heterospin complex Cu(hfac)2 with the nitronyl nitroxide radical. Russ Chem Bull 2013. [DOI: 10.1007/s11172-013-0053-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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42
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Fedin MV, Zhilina EF, Chizhov DL, Apolonskaya IA, Aleksandrov GG, Kiskin MA, Sidorov AA, Bogomyakov AS, Romanenko GV, Eremenko IL, Novotortsev VM, Charushin VN. Temperature-dependent zero-field splitting in a copper(ii) dimer studied by EPR. Dalton Trans 2013; 42:4513-21. [DOI: 10.1039/c2dt32697c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Matvey V Fedin
- International Tomography Center SB RAS, 630090 Novosibirsk, Russia.
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43
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Halcrow MA. Jahn–Teller distortions in transition metal compounds, and their importance in functional molecular and inorganic materials. Chem Soc Rev 2013; 42:1784-95. [DOI: 10.1039/c2cs35253b] [Citation(s) in RCA: 285] [Impact Index Per Article: 25.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Murakami R, Ishida T, Yoshii S, Nojiri H. Single-molecule magnet [Tb(hfac)3(2pyNO)] (2pyNO = t-butyl 2-pyridyl nitroxide) with a relatively high barrier of magnetization reversal. Dalton Trans 2013; 42:13968-73. [DOI: 10.1039/c3dt51784e] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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45
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Fedin MV, Bagryanskaya EG, Matsuoka H, Yamauchi S, Veber SL, Maryunina KY, Tretyakov EV, Ovcharenko VI, Sagdeev RZ. W-Band Time-Resolved Electron Paramagnetic Resonance Study of Light-Induced Spin Dynamics in Copper–Nitroxide-Based Switchable Molecular Magnets. J Am Chem Soc 2012; 134:16319-26. [DOI: 10.1021/ja306467e] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Matvey V. Fedin
- International Tomography Center SB RAS, Institutskaya str. 3a, 630090 Novosibirsk,
Russia
| | - Elena G. Bagryanskaya
- International Tomography Center SB RAS, Institutskaya str. 3a, 630090 Novosibirsk,
Russia
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS, Pr. Lavrentjeva
9, 630090 Novosibirsk, Russia
| | - Hideto Matsuoka
- Institute of Multidisciplinary
Research for Advanced Materials, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan
| | - Seigo Yamauchi
- Institute of Multidisciplinary
Research for Advanced Materials, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan
| | - Sergey L. Veber
- International Tomography Center SB RAS, Institutskaya str. 3a, 630090 Novosibirsk,
Russia
| | - Ksenia Yu. Maryunina
- International Tomography Center SB RAS, Institutskaya str. 3a, 630090 Novosibirsk,
Russia
| | - Evgeny V. Tretyakov
- International Tomography Center SB RAS, Institutskaya str. 3a, 630090 Novosibirsk,
Russia
| | - Victor I. Ovcharenko
- International Tomography Center SB RAS, Institutskaya str. 3a, 630090 Novosibirsk,
Russia
| | - Renad Z. Sagdeev
- International Tomography Center SB RAS, Institutskaya str. 3a, 630090 Novosibirsk,
Russia
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46
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Tretyakov EV, Tolstikov SE, Suvorova AO, Polushkin AV, Romanenko GV, Bogomyakov AS, Veber SL, Fedin MV, Stass DV, Reijerse E, Lubitz W, Zueva EM, Ovcharenko VI. Crucial Role of Paramagnetic Ligands for Magnetostructural Anomalies in “Breathing Crystals”. Inorg Chem 2012; 51:9385-94. [DOI: 10.1021/ic301149e] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | | | - Edward Reijerse
- Max-Planck-Institut für chemische Energiekonversion, 45470 Mülheim/Ruhr,
Germany
| | - Wolfgang Lubitz
- Max-Planck-Institut für chemische Energiekonversion, 45470 Mülheim/Ruhr,
Germany
| | - Ekaterina M. Zueva
- Department of Inorganic
Chemistry, Kazan State Technological University, 68 K. Marx Street,
420015 Kazan, Russian Federation
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47
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Fedin MV, Maryunina KY, Sagdeev RZ, Ovcharenko VI, Bagryanskaya EG. Self-Decelerating Relaxation of the Light-Induced Spin States in Molecular Magnets Cu(hfac)2LR Studied by Electron Paramagnetic Resonance. Inorg Chem 2011; 51:709-17. [DOI: 10.1021/ic202248v] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matvey V. Fedin
- International Tomography Center SB RAS, Institutskaya
str. 3a, 630090, Novosibirsk, Russia
| | - Ksenia Yu. Maryunina
- International Tomography Center SB RAS, Institutskaya
str. 3a, 630090, Novosibirsk, Russia
| | - Renad Z. Sagdeev
- International Tomography Center SB RAS, Institutskaya
str. 3a, 630090, Novosibirsk, Russia
| | - Victor I. Ovcharenko
- International Tomography Center SB RAS, Institutskaya
str. 3a, 630090, Novosibirsk, Russia
| | - Elena G. Bagryanskaya
- International Tomography Center SB RAS, Institutskaya
str. 3a, 630090, Novosibirsk, Russia
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48
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Exchange couplings in one-dimensionally arrayed 4f–3d heterometallic [Ln2Cu2]n compounds: A chemical trend of the coupling parameter. Polyhedron 2011. [DOI: 10.1016/j.poly.2011.03.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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49
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2,2′-Bipyridine-6,6′-diyl bisnitroxide as a paramagnetic host: Encapsulation of a zinc(II) ion. Polyhedron 2011. [DOI: 10.1016/j.poly.2011.02.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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50
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Wencewicz TA, Yang B, Rudloff JR, Oliver AG, Miller MJ. N-O chemistry for antibiotics: discovery of N-alkyl-N-(pyridin-2-yl)hydroxylamine scaffolds as selective antibacterial agents using nitroso Diels-Alder and ene chemistry. J Med Chem 2011; 54:6843-58. [PMID: 21859126 PMCID: PMC3188665 DOI: 10.1021/jm200794r] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The discovery, syntheses, and structure-activity relationships (SAR) of a new family of heterocyclic antibacterial compounds based on N-alkyl-N-(pyridin-2-yl)hydroxylamine scaffolds are described. A structurally diverse library of ∼100 heterocyclic molecules generated from Lewis acid-mediated nucleophilic ring-opening reactions with nitroso Diels-Alder cycloadducts and nitroso ene reactions with substituted alkenes was evaluated in whole cell antibacterial assays. Compounds containing the N-alkyl-N-(pyridin-2-yl)hydroxylamine structure demonstrated selective and potent antibacterial activity against the Gram-positive bacterium Micrococcus luteus ATCC 10240 (MIC(90) = 2.0 μM or 0.41 μg/mL) and moderate activity against other Gram-positive strains including antibiotic resistant strains of Staphylococcus aureus (MRSA) and Enterococcus faecalis (VRE). A new synthetic route to the active core was developed using palladium-catalyzed Buchwald-Hartwig amination reactions of N-alkyl-O-(4-methoxybenzyl)hydroxylamines with 2-halo-pyridines that facilitated SAR studies and revealed the simplest active structural fragment. This work shows the value of using a combination of diversity-oriented synthesis (DOS) and parallel synthesis for identifying new antibacterial scaffolds.
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Affiliation(s)
- Timothy A. Wencewicz
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Hall, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Baiyuan Yang
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Hall, University of Notre Dame, Notre Dame, IN 46556, USA
| | - James R. Rudloff
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Hall, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Allen G. Oliver
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Hall, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Marvin J. Miller
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Hall, University of Notre Dame, Notre Dame, IN 46556, USA
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