High-Temperature Spin Crossover in Iron(II) Complexes with 2,6-Bis(1 H -imidazol-2-yl)pyridine.
Ludmila G LavrenovaOlga G ShakirovaEvgeniy V KorotaevSvetlana V TrubinaAlexsei Ya TikhonovIrina A Os'kinaSergey A PetrovKonstantin Yu ZhizhinNikolay T KuznetsovPublished in: Molecules (Basel, Switzerland) (2022)
Novel iron(II) coordination compounds containing a ligand 2,6-bis(1 H -imidazol-2-yl)pyridine (L), having such a composition as [FeL 2 ]SO 4 ·0.5H 2 O, [FeL 2 ]Br 2 ·H 2 O, [FeL 2 ](ReO 4 ) 2 , [FeL 2 ]B 10 H 10 ∙H 2 O, [FeL 2 ]B 12 H 12 ∙1.5H 2 O had been synthesized and studied using UV-Vis (diffuse reflectance), infrared, extended X-ray absorption fine structure (EXAFS), and Mössbauer spectroscopy methods, as well as X-ray diffraction and static magnetic susceptibility methods. The analysis of the μ eff (T) dependence in the temperature range of 80-600 K have shown that all the obtained complexes exhibit a high-temperature spin crossover 1 A 1 ↔ 5 T 2 .
Keyphrases
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