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Romanenko GV, Kuznetsova OV, Tretyakov EV, Ovcharenko VI. Sodium salts of 2-hydroxy-3,5-dinitrophenyl-substituted nitronyl and imino nitroxides. Russ Chem Bull 2021. [DOI: 10.1007/s11172-021-3160-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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2
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Spinu CA, Pichon C, Ionita G, Mocanu T, Calancea S, Raduca M, Sutter JP, Hillebrand M, Andruh M. Synthesis, crystal structure, magnetic, spectroscopic, and theoretical investigations of two new nitronyl-nitroxide complexes. J COORD CHEM 2021. [DOI: 10.1080/00958972.2021.1871900] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Cristian Andrei Spinu
- Inorganic Chemistry Laboratory, Faculty of Chemistry, University of Bucharest, Bucharest, Romania
| | - Céline Pichon
- Laboratoire de Chimie de Coordination du CNRS (LCC), Université de Toulouse, CNRS, Toulouse, France
| | - Gabriela Ionita
- “Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, Bucharest, Romania
| | - Teodora Mocanu
- Inorganic Chemistry Laboratory, Faculty of Chemistry, University of Bucharest, Bucharest, Romania
- “Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, Bucharest, Romania
| | - Sergiu Calancea
- Inorganic Chemistry Laboratory, Faculty of Chemistry, University of Bucharest, Bucharest, Romania
- Faculty of Chemistry and Chemical Technology, Moldova State University, Chisinau, Moldova
| | - Mihai Raduca
- Inorganic Chemistry Laboratory, Faculty of Chemistry, University of Bucharest, Bucharest, Romania
| | - Jean-Pascal Sutter
- Laboratoire de Chimie de Coordination du CNRS (LCC), Université de Toulouse, CNRS, Toulouse, France
| | - Mihaela Hillebrand
- Physical Chemistry Department, Faculty of Chemistry, University of Bucharest, Bucharest, Romania
| | - Marius Andruh
- Inorganic Chemistry Laboratory, Faculty of Chemistry, University of Bucharest, Bucharest, Romania
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3
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Calancea S, Carrella L, Mocanu T, Sadohin V, Raduca M, Gutu I, Rocha JC, Vaz MGF, Rentschler E, Andruh M. Magnetic Molecular Rectangles Constructed from Functionalized Nitronyl‐Nitroxide Ligands and Lanthanide(III) Ions. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000954] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Sergiu Calancea
- Inorganic Chemistry Laboratory Faculty of Chemistry University of Bucharest Str. Dumbrava Rosie nr. 23 020464 Bucharest Romania
- Moldova State University Faculty of Chemistry and Chemical, Technology Chişinău 2009-Chisinau Moldova
| | - Luca Carrella
- Department of Chemistry Johannes Gutenberg University Mainz Duesbergweg 10–14 55128 - Mainz Germany
| | - Teodora Mocanu
- Inorganic Chemistry Laboratory Faculty of Chemistry University of Bucharest Str. Dumbrava Rosie nr. 23 020464 Bucharest Romania
- Coordination and Supramolecular Chemistry Laboratory “Ilie Murgulescu” Institute of Physical Chemistry Romanian Academy Splaiul Independentei 202 Bucharest 060021 Romania
| | - Vladimir Sadohin
- Moldova State University Faculty of Chemistry and Chemical, Technology Chişinău 2009-Chisinau Moldova
| | - Mihai Raduca
- Inorganic Chemistry Laboratory Faculty of Chemistry University of Bucharest Str. Dumbrava Rosie nr. 23 020464 Bucharest Romania
| | - Iacob Gutu
- Moldova State University Faculty of Chemistry and Chemical, Technology Chişinău 2009-Chisinau Moldova
| | - Julio C. Rocha
- Universidade Federal Fluminense Instituto de Química 24020-346-Niterói Rio de Janeiro Brazil
| | - Maria G. F. Vaz
- Universidade Federal Fluminense Instituto de Química 24020-346-Niterói Rio de Janeiro Brazil
| | - Eva Rentschler
- Department of Chemistry Johannes Gutenberg University Mainz Duesbergweg 10–14 55128 - Mainz Germany
| | - Marius Andruh
- Inorganic Chemistry Laboratory Faculty of Chemistry University of Bucharest Str. Dumbrava Rosie nr. 23 020464 Bucharest Romania
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4
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Qamar OA, Cong C, Ma H. Solid state mononuclear divalent nickel spin crossover complexes. Dalton Trans 2020; 49:17106-17114. [PMID: 33205805 DOI: 10.1039/d0dt03421e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Spin crossover complexes containing 3d4-3d7 transition metal ions with tunable electronic configurations in appropriate ligand field environments have been extensively investigated. In contrast, the development of 3d8 divalent nickel complexes displaying such a spin crossover behavior is far behind. The increasing number of X-ray single crystal structures along with magnetic evidence and thermodynamic equilibrium indicate that bistable divalent nickel complexes are gradually recognized to be a formal member of the "spin crossover family". Unfortunately, the rarity of nickel spin crossover complexes is occasionally mentioned. This Perspective article highlights examples of mononuclear 3d8 nickel spin crossover complexes in dynamic rearrangements with characterized solid state structures from the viewpoint of types of ligands utilized.
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Affiliation(s)
- Obaid Ali Qamar
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 21186, China.
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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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6
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Krylova IV, Saverina EA, Rynin SS, Lalov AV, Minyaev ME, Nikolaevskaya EN, Syroeshkin MA, Egorov MP. Synthesis, characterization and redox properties of Ar–C=N→Ge←N=C–Ar containing system. MENDELEEV COMMUNICATIONS 2020. [DOI: 10.1016/j.mencom.2020.09.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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7
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Patrascu AA, Briganti M, Soriano S, Calancea S, Allão Cassaro RA, Totti F, Vaz MGF, Andruh M. SMM Behavior Tuned by an Exchange Coupling LEGO Approach for Chimeric Compounds: First 2p–3d–4f Heterotrispin Complexes with Different Metal Ions Bridged by One Aminoxyl Group. Inorg Chem 2019; 58:13090-13101. [DOI: 10.1021/acs.inorgchem.9b01998] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andrei A. Patrascu
- Inorganic Chemistry Laboratory, Faculty of Chemistry, University of Bucharest, Str. Dumbrava Rosie nr. 23, 020464-Bucharest, Romania
| | - Matteo Briganti
- Department of Chemistry “Ugo Schiff” and INSTM RU University of Florence, 50019 Sesto Fiorentino, Italy
- Instituto de Química, Universidade Federal Fluminense, 24020-346-Niterói, Rio de Janeiro, Brazil
| | - Stéphane Soriano
- Instituto de Física, Universidade Federal Fluminense, 24210-346-Niterói, Rio de Janeiro, Brazil
| | - Sergiu Calancea
- Inorganic Chemistry Laboratory, Faculty of Chemistry, University of Bucharest, Str. Dumbrava Rosie nr. 23, 020464-Bucharest, Romania
- Faculty of Chemistry and Chemical Technology, Moldova State University, MD-2009-Chisinau, Moldova
| | - Rafael A. Allão Cassaro
- Instituto de Química, Universidade Federal do Rio de Janeiro, 21941-909-Rio de Janeiro, Brazil
| | - Federico Totti
- Department of Chemistry “Ugo Schiff” and INSTM RU University of Florence, 50019 Sesto Fiorentino, Italy
| | - Maria G. F. Vaz
- Instituto de Química, Universidade Federal Fluminense, 24020-346-Niterói, Rio de Janeiro, Brazil
| | - Marius Andruh
- Inorganic Chemistry Laboratory, Faculty of Chemistry, University of Bucharest, Str. Dumbrava Rosie nr. 23, 020464-Bucharest, Romania
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Bubnov M, Teplova I, Kozhanov K, Rumyantcev R, Fukin G, Bogomyakov A, Cherkasov V. Novel bis-catecholato heterospin manganese complexes. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.10.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Miao H, Li M, Li HQ, Shen FX, Zhang YQ, Wang XY. Syntheses and magnetic properties of a bis-tridentate nitronyl nitroxide radical and its metal complexes. Dalton Trans 2019; 48:4774-4778. [DOI: 10.1039/c9dt00207c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new bis-tridentate nitronyl nitroxide radical was synthesized and characterized. Field-induced slow magnetic relaxation was observed in the radical-bridged CoII complex.
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Affiliation(s)
- Hao Miao
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
| | - Miao Li
- School of Physical Science and Technology
- Nanjing Normal University
- Nanjing 210023
- China
| | - Hong-Qing Li
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
| | - Fu-Xing Shen
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
| | - Yi-Quan Zhang
- School of Physical Science and Technology
- Nanjing Normal University
- Nanjing 210023
- China
| | - Xin-Yi Wang
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
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Bhatt P, Kolanji K, Ivanova A, Yogi A, Jakob G, Mukadam MD, Yusuf SM, Baumgarten M. Magnetic Exchange Interaction in Nitronyl Nitroxide Radical-Based Single Crystals of 3d Metal Complexes: A Combined Experimental and Theoretical Study. ACS OMEGA 2018; 3:2918-2933. [PMID: 31458563 PMCID: PMC6641457 DOI: 10.1021/acsomega.7b01669] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 02/22/2018] [Indexed: 06/10/2023]
Abstract
Two stable nitronyl nitroxide free radicals {R 1 = 4'-methoxy-phenyl-4,4,5,5,-tetramethylimidazoline-1-oxyl-3-oxide (NNPhOMe) and R 2 = 2-(2'-thienyl)-4,4,5,5-tetramethylimidazoline 3-oxide 1-oxyl (NNT)} are successfully synthesized using Ullmann condensation. The reactions of these two radicals with 3d transition metal ions, in the form of M(hfac)2 (where M = Co or Mn, hfac: hexafluoroacetylacetone), result in four metal-organic complexes Co(hfac)2(NNPhOMe)2, 1; Co(hfac)2(NNT)2·(H2O), 2; Mn(hfac)2(NNPhOMe)·x(C7H16), 3; and Mn(hfac)2(NNT)2, 4. The crystal structure and magnetic properties of these complexes are investigated by single-crystal X-ray diffraction, dc magnetization, infrared, and electron paramagnetic resonance spectroscopies. The compounds 1 and 4 crystallize in the triclinic, P1̅, space group, whereas complex 3 crystallizes in the monoclinic structure with the C2/c space group and forms chain-like structure along the c direction. The complex 2 crystallizes in the monoclinic symmetry with the P21/c space group in which the N-O unit of the radical coordinates with the Co ion through hydrogen bonding of a water molecule. All compounds exhibit antiferromagnetic interactions between the transition metal ions and nitronyl nitroxide radicals. The magnetic exchange interactions (J/K B) are derived using isotropic spin Hamiltonian H = -2J∑(S metal S radical) for the model fitting to the magnetic susceptibility data for 1, 2, 3, and 4. The exchange interaction strengths are found to be -328, -1.25, -248, and -256 K, for the 1, 2, 3, and 4 metal-organic complexes, respectively. Quantum chemical density functional theory (DFT) computations are carried out on several models of the metal-radical complexes to elucidate the magnetic interactions at the molecular level. The calculations show that a small part of the inorganic spins are delocalized over the oxygens from hfac {∼0.03 for Co(II) and ∼0.015 for Mn(II)}, whereas a more significant fraction {∼0.24 for Mn(II) and ∼0.13 for Co(II)} of delocalized spins from the metal ion is transferred to the coordinated oxygen atom(s) of nitronyl nitroxide.
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Affiliation(s)
- Pramod Bhatt
- Solid
State Physics Division, Bhabha Atomic Research
Centre, Mumbai 400 085, India
| | - Kubandiran Kolanji
- Max
Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
| | - Anela Ivanova
- University
of Sofia, Faculty of Chemistry and Pharmacy, 1 James Bourchier Avenue, 1164 Sofia, Bulgaria
| | - Arvind Yogi
- Tata
Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai 400005, India
| | - Gerhard Jakob
- Institute
of Physics, University of Mainz, Staudinger Weg 7, 55128 Mainz, Germany
| | - Mayuresh D. Mukadam
- Solid
State Physics Division, Bhabha Atomic Research
Centre, Mumbai 400 085, India
| | - Seikh Mohammad Yusuf
- Solid
State Physics Division, Bhabha Atomic Research
Centre, Mumbai 400 085, India
- Homi
Bhabha
National Institute, Anushaktinagar, Mumbai 400 094, India
| | - Martin Baumgarten
- Max
Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
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