Spectroscopic and redox properties of pseudotetrahedral copper(II) complexes. Their relation to copper proteins
Spectroscopic and redox properties of pseudotetrahedral copper(II) complexes. Their relation to copper proteins
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伪四面体铜（II）配合物的光谱和氧化还原性质。
DOI：
10.1021/ic50172a018
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发表时间：
1977
影响因子：
4.6
通讯作者：
A. Addison
中科院分区：
文献类型：
--
作者：
H. Yokoi;A. Addison
本文研究了一系列吡咯-2-甲醛Schiff碱铜（II）配合物的可见吸收光谱、ESR谱和氧化还原电位，这些配合物的配位立体化学从正方-平面几何构型到假四面体几何构型都有不同程度的畸变。dd带能量A [1，g]之间存在平滑的相关性|、A0和g 0值。当螯合环之间的二面角从0增加到90时，||增加，||| | 以反平行方式降低，氧化还原电位系统地向更正值移动。这些观察结果与蓝铜蛋白金属结合位点的四面体畸变一致。
Visible absorption and ESR spectra and redox potentials have been examined for a series of pyrrole-2-carboxaldehyde Schiff base copper (II) complexes, whose coordination stereochemistry is distorted to varying extents from square-planarto pseudotetrahedral geometry. There are smooth correlations among dd band energies, A\\, g]|, A0, and g0 values. As the dihedral angle between chelate rings increases from 0 through 90, g|| increases,|||| decreases in an antiparallel fashion, and redox potentials shift systematically to more positive values. These observations are consistent with tetrahedral distortion at the metal binding sites of blue copper proteins.