SYNTHESIS, CHARACTERIZATION AND REACTIVITY OF A RUTHENIUM-QUINONE COMPLEX

被引：35

作者：

BHATTACHARYA, S

机构：

[1] Department of Chemistry, Inorganic Chemistry Section, Jadavpur University, Calcutta

来源：

POLYHEDRON | 1994年 / 13卷 / 03期

关键词：

D O I：

10.1016/S0277-5387(00)81659-9

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A mixed ligand ruthenium-quinone complex, Ru(trpy)(DBQ)Cl [trpy = 2,2': 6',2''-terpyridine, DBQ = 3,5-di-tert-butylquinone] has been synthesized. The complex is paramagnetic (1 upe) and shows a sharp EPR signal at g approximate to 2. A Ru-II-DBSQ [DBSQ = semiquinonate form of DBQ] charge distribution is therefore assigned to this complex. It shows intense absorption bands in the visible and near-infrared regions which are assigned to allowed charge-transfer transitions. In dichloromethane solution it shows three reversible cyclic voltammetric responses, one ruthenium(II)-ruthenium(III) oxidation and the reductions of DBSQ and trpy ligands. The chloride ligand in Ru(trpy)(DBSQ)Cl can be replaced in aqueous medium by reacting it with Ag+ to afford the [Ru(trpy)(DBSQ)(H2O)](1) + ion, which has been isolated and characterized as the perchlorate salt. This aquo complex is easily converted back to the parent chloro complex by reaction with the chloride ion.

引用

页码：451 / 456

页数：6

共 26 条

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