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 , E-ISSN: 1531-8613

Output data

Year: 2022, Volume: 67, Pages: 1158-1168 Pages count : 11 DOI: 10.1134/S0036023622080174

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, Novosibirsk, 630090 Russia
2	Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
3	Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
4	Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630128 Russia
5	Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow, 119991 Russia

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. P.1158-1168. DOI: 10.1134/S0036023622080174 WOS Scopus РИНЦ OpenAlex

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