ELECTROCHEMICAL REDUCTION PATHWAYS OF THE RHODOCENIUM ION - DIMERIZATION AND REDUCTION OF RHODOCENE

被引：58

作者：

ELMURR, N

SHEATS, JE

GEIGER, WE

HOLLOWAY, JDL

机构：

[1] RIDER COLL,DEPT CHEM,LAWRENCEVILLE,NJ 08648

[2] UNIV VERMONT,DEPT CHEM,BURLINGTON,VT 05401

来源：

INORGANIC CHEMISTRY | 1979年 / 18卷 / 06期

关键词：

D O I：

10.1021/ic50196a007

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The electrochemical reduction of the rhodocenium ion, Cp2Rh+, and its dicarbollide analogue, [(B9C2Hu)2Rh]-, has been studied in nonaqueous solvents by dc and ac polarography, cyclic voltammetry, and controlled potential coulometry. The starting Rh(III) complexes can both be reduced in two separate one-electron processes to Rh(II) and Rh(I) compounds which are very reactive. Cp2Rh has a lifetime of about 2 s at room temperature but can be stabilized by performing the electrolysis at low temperatures. Rhodocene decomposes by dimerizing to form [Cp2Rh]2, which can be isolated in good yield by electrolysis of Cp2Rh+ solutions. Evidence is presented for the transient existence of the rhodocene anion, and comparison to the reduction of Cp2Co+ is made. © 1979, American Chemical Society. All rights reserved.

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页码：1443 / 1446

页数：4

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