REACTIONS OF DINUCLEAR AND POLYNUCLEAR COMPLEXES .11. THE ALKYNE INTERACTION - KINETIC AND ELECTROCHEMICAL STUDY ON THE PARALLEL MU-3-ETA(2) BONDING MODE IN TRINUCLEAR CARBONYL CLUSTERS OF IRON - INFLUENCE OF EXTERNAL LIGANDS ON THE ALKYNE ORIENTATION IN [FE3CP2(CO)5(CF3C2CF3)]

被引：11

作者：

RUMIN, R ^{[1
]}

ROBINLEGUEN, F ^{[1
]}

TALARMIN, J ^{[1
]}

PETILLON, FY ^{[1
]}

机构：

[1] UNIV BRETAGNE OCCIDENTALE,FAC SCI,CNRS,URA CHIM ELECTROCHIM MOLEC & CHIM ANALYT 322,BP 809,F-29285 BREST,FRANCE

来源：

ORGANOMETALLICS | 1994年 / 13卷 / 04期

关键词：

D O I：

10.1021/om00016a019

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The parallel mu3-eta2 alkyne-cluster interaction in triiron compounds of the formula [Fe3-Cp2(CO)5(CF3C2CF3)] (1) has been investigated. Kinetics of the interconversion of asymmetrical (1a) and symmetrical (1b) conformers are reported. The influence of external ligands on the alkyne orientation is examined on treating 1 with tertiary phosphine and phosphite. The monosubstituted complexes [Fe3Cp2(CO)4(L) (CF3C2CF3)] (L = PMe3 (2), P(OMe)3 (3)), in which the alkyne ligand is bonded in mu3-eta2(parallel-to) mode, are obtained. The redox chemistry of triiron alkyne clusters 1-3 has been investigated by electrochemical techniques. One-electron reduction coupled with the decoordination of a ligand (CO or phosphorus ligand) induces alkyne reorientation over the trimetallic framework.

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页码：1155 / 1164

页数：10

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