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Chen J, Liu CZ, Zhang YJ, Wang QL. Asymmetric Dimer Cobalt(II)-Nitroxide Complex: Synthesis, Structure, and Magnetism. RUSS J INORG CHEM+ 2022. [DOI: 10.1134/s0036023622100552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Vaz MG, Andruh M. Molecule-based magnetic materials constructed from paramagnetic organic ligands and two different metal ions. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213611] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Sherstobitova T, Maryunina K, Tolstikov S, Letyagin G, Romanenko G, Nishihara S, Inoue K. Ligand Structure Effects on Molecular Assembly and Magnetic Properties of Copper(II) Complexes with 3-Pyridyl-Substituted Nitronyl Nitroxide Derivatives. ACS OMEGA 2019; 4:17160-17170. [PMID: 31656889 PMCID: PMC6811855 DOI: 10.1021/acsomega.9b01575] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 08/15/2019] [Indexed: 06/10/2023]
Abstract
Reaction of Cu(hfac)2 with methyl- and bromo-3-pyridyl-substituted nitronyl nitroxides (L R ) leads to assemble a diverse set of coordination complexes: mononuclear [Cu(hfac)2L 2-Me ], binuclear [{Cu(hfac)2}2(H2O)L 2-Me ], trinuclear [{Cu(hfac)2}3(L 6-Br )2], pentanuclear [{Cu(hfac)2}5(L 2-Me )2], and [{Cu(hfac)2}5(L 2-Me )4], cocrystals [Cu(hfac)2(L 2-Br )2]·[Cu(hfac)2(H2O)2] and [Cu(hfac)2(L 2-Br )2]·2[Cu(hfac)2H2O], one-dimensional polymers [Cu(hfac)2L 2-Br ] n and [Cu(hfac)2L 6-Br ] n , and cyclic dimers [Cu(hfac)2L 5-Me ]2, [Cu(hfac)2L 5-Br ]2, and [Cu(hfac)2L 6-Me ]2. The molecular structures of the obtained complexes are strongly affected by the substituent type and its location in the pyridine heterocycle. Occupation of the second position of the pyridine ring increases the steric hindrance of both imine and nitroxide coordination sites of L 2-R , which is favorable for the formation of various conformers and precipitation of complexes with different molecular structures. The pentanuclear [{Cu(hfac)2}5(L 2-Me )2] and [{Cu(hfac)2}5(L 2-Me )4] complexes do not have prior analogues and are valuable model objects for investigation of the mechanism of formation of various coordination polymers. The arrangement of long Cu-ONO bonds in {CuO6} square bipyramids due to the weakening nitroxide donor site in complexes, based on L 2-Me , L 2-Br , and L 6-Br ligands, results in ferromagnetic exchange interactions between spins of Cu2+ ions and nitroxides. Complexes with substituents that do not considerably affect the coordination ability of ligands (L 5-Me , L 5-Br , and L 6-Me ) exhibit strong antiferromagnetic exchange interactions between spins of Cu2+ ions and nitroxides.
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Affiliation(s)
- Tatiana Sherstobitova
- Department of Chemistry, Graduate
School of Science, Chirality Research Center (CResCent), and Institute for
Advanced Materials Research, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan
| | - Kseniya Maryunina
- Department of Chemistry, Graduate
School of Science, Chirality Research Center (CResCent), and Institute for
Advanced Materials Research, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan
- International
Tomography Center SB RAS, Institutskaya Str. 3a, Novosibirsk 630090, Russian Federation
| | - Svyatoslav Tolstikov
- International
Tomography Center SB RAS, Institutskaya Str. 3a, Novosibirsk 630090, Russian Federation
| | - Gleb Letyagin
- International
Tomography Center SB RAS, Institutskaya Str. 3a, Novosibirsk 630090, Russian Federation
- Novosibirsk
State University, Pirogova
Str. 1, Novosibirsk 630090, Russian Federation
| | - Galina Romanenko
- International
Tomography Center SB RAS, Institutskaya Str. 3a, Novosibirsk 630090, Russian Federation
| | - Sadafumi Nishihara
- Department of Chemistry, Graduate
School of Science, Chirality Research Center (CResCent), and Institute for
Advanced Materials Research, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan
| | - Katsuya Inoue
- Department of Chemistry, Graduate
School of Science, Chirality Research Center (CResCent), and Institute for
Advanced Materials Research, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan
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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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