Valence tautomerism in a cobalt complex of a Schiff base diquinone ligand

被引：95
作者：
Caneschi, A
Cornia, A
Dei, A
机构：
[1] Univ Florence, Dipartimento Chim, I-50144 Florence, Italy
[2] Univ Modena, Dept Chem, I-41100 Modena, Italy
来源：
INORGANIC CHEMISTRY | 1998年 / 37卷 / 13期
关键词：
D O I：
10.1021/ic971083w
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The cobalt(III) complex of a Schiff base diquinone ligand Co-III(Cat-N-BQ)(Cat-N-SQ) undergoes an entropy-driven valence tautomeric equilibrium in solution yielding the Co-II(Cat-N-BQ)(2) species. This suggestion is supported by variable temperature electronic and H-1 NMR spectra, as well as by solution magnetic susceptibility data. The calculated thermodynamic quantities associated to the redox equilibrium are Delta H = 42.0(0.8) kJ mol(-1) and Delta S = 140 (3) J mol(-1) K-1.
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页码：3419 / +
页数：4
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