Valence tautomerism in a cobalt complex of a Schiff base diquinone ligand
Valence tautomerism in a cobalt complex of a Schiff base diquinone ligand
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DOI：
10.1021/ic971083w
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发表时间：
1998-06-29
影响因子：
4.6
通讯作者：
Dei, A
中科院分区：
文献类型：
--
作者：
Caneschi, A;Cornia, A;Dei, A
Schiff碱二醌配体Co-III（Cat-N-BQ）（Cat-N-SQ）的钴（III）配合物在溶液中经历熵驱动的价态互变异构平衡，产生Co-II（Cat-N-BQ）（2）物种。变温电子和H-1 NMR谱，以及溶液磁化率数据支持这一建议。与氧化还原平衡相关的计算热力学量为Δ H = 42.0（0.8）kJ mol（-1）和Δ S = 140（3）J mol（-1）K-1。
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.