Abstract
The bistable cobalt complex containing two symmetrical 3,6-di-tert-butyl-o-benzoquinone and one 1,10-phenanthroline moieties as ligands (1) was synthesized. Complex 1 was isolated in the individual state and characterized by IR and ESR spectroscopy, X-ray diffraction, magnetochemical studies, and precision calorimetry. A change in temperature causes the reversible metal-ligand electron transfer and spin crossover (redox isomerism) in complex 1 in the crystalline state. The redox-isomeric transformation at ∼250 K is accompanied by the phase transition. The structural study at two temperatures confirmed the changes in the molecular and crystal structure associated with the redox-isomeric transformation.
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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 3, pp. 440–446, March, 2011.
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Bubnov, M.P., Skorodumova, N.A., Bogomyakov, A.S. et al. Investigation of cobalt (1,10-phenanthroline)-bis-(3,6-di-tert-butyl-o-benzosemiquinolate) by X-ray diffraction, IR and ESR spectroscopy, magnetochemistry, and precision calorimetry. Russ Chem Bull 60, 449–455 (2011). https://doi.org/10.1007/s11172-011-0071-5
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DOI: https://doi.org/10.1007/s11172-011-0071-5