Study of Spin-Crossover in Iron(II) Complexes with 2,6-Bis(4,5-Dimethyl-1H-Imidazol-2-yl)Pyridine and closo-Borate Anions

Study of Spin-Crossover in Iron(II) Complexes with 2,6-Bis(4,5-Dimethyl-1H-Imidazol-2-yl)Pyridine and closo-Borate Anions Full article

Journal

Russian Journal of Inorganic Chemistry
ISSN: 0036-0236

Output data

Year: 2022, Volume: 67, Number: 8, Pages: 1158–1168 Pages count : 11 DOI: 10.1134/S0036023622080174

Tags

synthesis of coordination compounds iron(II) 2,6-bis(4,5-dimethyl-1H-imidazol-2-yl)pyridine closo-borate(2–) anions spin-crossover 1 А 1 ↔ 5 Т 2

Authors

Ivanova A.D. ¹ , Lavrenova L.G. ¹ , Korotaev E.V. ¹ , Trubina S.V. ¹ , Tikhonov A.Ya. ² , Kriventsov V.V. ³ , Petrov S.A. ⁴ , Zhizhin K.Yu. ⁵ , Kuznetsov N.T. ⁵

Affiliations

1	Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences
2	Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch, Russian Academy of Science
3	Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences
4	Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences
5	Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

New iron(II) coordination compounds with 2,6-bis(4,5-dimethyl-1H-imidazol-2-yl)pyridine (L) and closo-borate(2–) anions [FeL2]B10H10⋅2H2O and [FeL2]B12H12⋅H2O have been synthesized. The compounds have been identified and studied by CHN analysis, electron spectroscopy (diffuse reflection spectroscopy), IR, Mössbauer, and EXAFS spectroscopies, X-ray powder diffraction, and static magnetic susceptibility. The structures of the coordination knots of complexes [FeL2]B10H10⋅2H2O and [FeL2]B12H12⋅H2O has been obtained by modeling the EXAFS spectra. The ligand is coordinated by the iron(II) ion in a tridentate-cyclic manner by two nitrogen atoms of imidazole cycles and a nitrogen atom of pyridine to form the FeN6 coordination knot. The study of the temperature dependence of the magnetic susceptibility in the range of 80–500 K has showed that the high-temperature spin-crossover 1А1 ↔ 5Т2 manifests itself in the obtained compounds.

Ivanova A.D. , Lavrenova L.G. , Korotaev E.V. , Trubina S.V. , Tikhonov A.Y. , Kriventsov V.V. , Petrov S.A. , Zhizhin K.Y. , Kuznetsov N.T.
Study of Spin-Crossover in Iron(II) Complexes with 2,6-Bis(4,5-Dimethyl-1H-Imidazol-2-yl)Pyridine and closo-Borate Anions
Russian Journal of Inorganic Chemistry. 2022. V.67. N8. P.1158–1168. DOI: 10.1134/S0036023622080174 WOS РИНЦ

Иванова А.Д. , Лавренова Л.Г. , Коротаев Е.В. , Трубина С.В. , Тихонов А.Я. , Кривенцов В.В. , Петров С.А. , Жижин К.Ю. , Кузнецов Н.Т.
Исследование спин-кроссовера в комплексах клозо-боратов железа(II) с 2,6-бис(4,5-диметил-1H-имидазол-2-ил)пиридином
Журнал неорганической химии. 2022. Т.67. №8. С.1058-1069. DOI: 10.31857/S0044457X22080177 РИНЦ

Submitted:	Jan 11, 2022
Accepted:	Jan 25, 2022
Published online:	Sep 12, 2022

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