Cluster build-up in aqueous solution:: synthesis, structure, protonation and catalytic properties of the trinuclear cation [(η6-C6H6)(η6-C6Me6)2Ru3(μ2-H)3(μ3-O)]+

被引:39
作者
Faure, M [1 ]
Jahncke, M [1 ]
Neels, A [1 ]
Stoeckli-Evans, H [1 ]
Süss-Fink, G [1 ]
机构
[1] Univ Neuchatel, Inst Chim, CH-2000 Neuchatel, Switzerland
关键词
cluster; trinuclear; ruthenium; arene ligand; oxo cap; aromatic hydrogenation; water-soluble catalyst;
D O I
10.1016/S0277-5387(99)00170-9
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The trinuclear ore-capped cluster cation [(eta(6)-C6H6)(eta(6)-C6Me6)(2)Ru-3(mu(2)-H)(3)(mu(3)-O)](+) (2) was synthesised by reacting [(eta(6)- C6Me6)Ru(H2O)(3)](2+) with [(eta(6)-C6Me6)(2)Ru-2(mu(2)-H)(3)](+) in aqueous solution. The single-crystal X-ray structure analysis of the tetrafluoroborate salt shows the cation to contain a H2O molecule hydrogen-bonded to the mu(3)-oxo ligand. Acidification experiments show two protonation steps occuring at this H2O molecule and the oxo cap of the triruthenium cluster. The cluster cation 2 catalyses the hydrogenation of aromatic compounds in aqueous solution under biphasic conditions. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:2679 / 2685
页数:7
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