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

被引：25

作者：

Bubnov, M. P. ^{[1
]}

Skorodumova, N. A. ^{[1
]}

Bogomyakov, A. S. ^{[2
]}

Romanenko, G. V. ^{[2
]}

Arapova, A. V. ^{[1
]}

Kozhanov, K. A. ^{[1
]}

Smirnova, N. N. ^{[3
]}

Abakumov, G. A. ^{[1
]}

Cherkasov, V. K. ^{[1
]}

机构：

[1] Russian Acad Sci, GA Razuvaev Inst Organometall Chem, Nizhnii Novgorod 603950, Russia

[2] Russian Acad Sci, Siberian Branch, Int Tomog Ctr, Novosibirsk 630090, Russia

[3] NI Lobachevsky State Univ Nizhny Novgorod, Res Inst Chem, Nizhnii Novgorod 603950, Russia

来源：

RUSSIAN CHEMICAL BULLETIN | 2011年 / 60卷 / 03期

基金：

俄罗斯基础研究基金会;

关键词：

redox isomerism; o-semiquinone; cobalt complex; IR spectroscopy; ESR spectroscopy; magnetic properties; X-ray diffraction study; precision calorimetry; O-QUINONE COMPLEXES; VALENCE TAUTOMERIC TRANSITION; THERMODYNAMIC PROPERTIES; MAGNETIC-PROPERTIES; ELECTRON-TRANSFER; PHASE-TRANSITION; REDOX ISOMERISM; METAL-COMPLEXES; SEMIQUINONE; INTERCONVERSION;

D O I：

10.1007/s11172-011-0071-5

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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 similar to 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.

引用

页码：449 / 455

页数：7

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