METAL-METAL INTERACTIONS IN TETRAKIS(DIPHENYLPHOSPHINO)BENZENE-BRIDGED DIMETALLIC COMPLEXES AND THEIR RELATED COORDINATION POLYMERS

被引：25

作者：

WANG, PW ^{[1
]}

FOX, MA ^{[1
]}

机构：

[1] UNIV TEXAS,DEPT CHEM & BIOCHEM,AUSTIN,TX 78712

来源：

INORGANIC CHEMISTRY | 1994年 / 33卷 / 13期

关键词：

D O I：

10.1021/ic00091a037

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Electrochemical, EPR, and spectroelectrochemical methods have been used to prove electronic coupling through a 1,2,4,5,-tetrakis(diphenylphosphino)benzene bridging ligand connecting metal centers in several ni-, Pb-, and Pt-containing dimetallic complexes. These dimetalated complexes showed weak intervalence charge transfer (IT) bands and slightly shifted redox potentials in comparison with their monometallic models. A Marcus-Hush analysis of the energies of the IT bands for the electrochemically generated mixed-valence heterodimetallic complexes (Ni0-Pd(II) and Ni0-Pt(ii), respectively) established the magnitude of intermetallic electronic coupling. The weak thermal coupling observed in these dimetalated complexes is consistent with th very low conductivities (10(-8)-10(-10) OMEGA-1 cm-1) observed in the polymeric analogs of these complexes, namely, the newly prepared metal coordination polymers (M = Ni(II), Pd(II), Pt(II)) with 1,2,4,5-tetrakis(diphenylphosphino) benzene.

引用

页码：2938 / 2945

页数：8

共 40 条

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