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- Title
Novel Five-Coordinated Bis-Dioxolene Cobalt Complexes with Methoxy-Substituted Triarylphosphine.
- Authors
Zolotukhin, A. A.; Bubnov, M. P.; Kozhanov, K. A.; Cherkasov, A. V.; Fukin, G. K.; Chernavin, P. A.; Bogomyakov, A. S.
- Abstract
Three novel five-coordinated bis-dioxolene cobalt complexes were synthesized and characterized by single crystal X-ray diffractometry and magnetochemistry. Structural study indicates square-pyramidal coordination geometry around cobalt ion. Structural parameters of coordinated dioxolenes together with magnetic measurements and DFT calculation data characterize compounds as mixed valence catecholato-semiquinonate derivatives of low spin cobalt(III). Magnetic moment of complex based on methoxy-substituted dioxolene grows at the temperatures above 260 K that can be interpreted as valence tautomeric/spin-crossover transition. This transition is not completed at the temperature 350 K.
- Subjects
COBALT; MAGNETIC measurements; VALENCE fluctuations; MAGNETOCHEMISTRY; MAGNETIC moments
- Publication
Russian Journal of General Chemistry, 2023, Vol 93, pS731
- ISSN
1070-3632
- Publication type
Article
- DOI
10.1134/S1070363223160107