SYNTHESIS OF BINUCLEAR (BETA-DIKETONATO)RUTHENIUM(III) COMPLEXES THROUGH INTRODUCTION OF AN ETHYNYL GROUP AT A GAMMA-POSITION OF TRIS(BETA-DIKETONATO)RUTHENIUM(III) AND ELECTROCHEMISTRY OF THE BINUCLEAR COMPLEXES

被引：41

作者：

KASAHARA, Y

HOSHINO, Y

KAJITANI, M

SHIMIZU, K

SATO, GP

机构：

[1] FUKUI UNIV,FAC ENGN,DEPT APPL PHYS,3-9-1 BUNKYO KU,FUKUI 910,JAPAN

[2] SOPHIA UNIV,FAC SCI & TECHNOL,DEPT CHEM,CHIYODA KU,TOKYO 102,JAPAN

来源：

ORGANOMETALLICS | 1992年 / 11卷 / 05期

关键词：

D O I：

10.1021/om00041a033

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

An ethynyl group was introduced into a gamma-position of a tris(beta-diketonato)ruthenium(III) complex through the reaction of the complex and (trimethylsilyl)-acetylene followed by removal of the trimethylsilyl group. The ethynyl complex is a useful intermediate for syntheses of homo- and heterobinuclear complexes. The preparation of two binuclear complexes, [L2Ru(III)-(OCMe)2C(-C=C-)2C(MeCO)2Ru(III)L2] and [L2Ru(III)-(OCMe)2C(-C=C-)2Fc] (L = [Me3CCOCHCOCMe3]-, Fc = ferrocenyl), is described. The homobinuclear complex underwent a stepwise two-electron oxidation and reduction through the Ru(IV)-Ru(III) and Ru(III)-Ru(II) states, respectively, in acetonitrile and dicholoromethane media at 25-degrees-C. The stabilities of the mixed-valence states are briefly discussed in terms of the comproportionation constants.

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页码：1968 / 1971

页数：4

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