Details

Autor(en) / Beteiligte

• Shakirova, Olga G
• Os’kina, Irina A
• Korotaev, Evgeniy V
• Petrov, Sergey A
• Kuratieva, Natalia V
• Tikhonov, Alexsei Ya
• Lavrenova, Lyudmila G

Titel

Spin Crossover and Thermochromism in Iron-4-methoxypyridine

Ist Teil von

• International journal of molecular sciences, 2023-06, Vol.24 (12)

Ort / Verlag

MDPI AG

Erscheinungsjahr

2023

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• New iron(II) complexes with 2,6-bis(1H-imidazol-2-yl)-4-methoxypyridine (L) of the composition [FeL[sub.2]]A[sub.n]∙mH[sub.2]O (A = SO[sub.4] [sup.2−], n = 1, m = 2 (I); A = ReO[sub.4] [sup.−], n = 2, m = 1 (II); A = Br[sup.−], n = 2, m = 2 (III)) have been synthesized and investigated. To determine the coordination ability of the ligand, a single crystal of a copper(II) complex of the composition [CuLCl[sub.2]] (IV) was obtained and studied by X-ray technique. Compounds I–III were studied using methods of X-ray phase analysis, electron (diffuse reflection spectra), infrared and Mössbauer spectroscopy, static magnetic susceptibility. The study of the µ[sub.eff](T) dependence showed that the [sup.1]A[sub.1] ↔ [sup.5]T[sub.2] spin crossover manifests itself in the compounds. The spin crossover is accompanied by thermochromism: there is a distinct color change orange ↔ red-violet.