ELECTRON-TRANSFER REACTIONS OF COPPER(III)-PEPTIDE COMPLEXES WITH "TRIS(1,10-PHENANTHROLINE)COBALT(II)

被引：25

作者：

DEKORTE, JM ^{[1
]}

OWENS, GD ^{[1
]}

MARGERUM, DW ^{[1
]}

机构：

[1] PURDUE UNIV,DEPT CHEM,W LAFAYETTE,IN 47907

来源：

INORGANIC CHEMISTRY | 1979年 / 18卷 / 06期

关键词：

D O I：

10.1021/ic50196a030

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Tripeptide and tetrapeptide complexes of Cu(III) rapidly oxidize Co(phen)32+ showing that outer-sphere electron transfer occurs. The rates for reactions between Co(phen)32+ and ten different uncharged copper(III)-peptide complexes (with E° values for the cross exchange ranging from 0.23 to 0,56 V) exhibit a linear free energy dependence: log k12 = 0.25 (±0.02) log K12 + 4.4 (±0.2). The slope is much less than that predicted by the usual formulation of the Marcus theory. Nevertheless, electron transfer involving copper(III,II)-peptide complexes is shown to be a very facile process. © 1979, American Chemical Society. All rights reserved.

引用

页码：1538 / 1542

页数：5

共 33 条

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