DYNAMIC BEHAVIOR OF HIGH-NUCLEARITY OSMIUM MERCURY CLUSTERS IN SOLUTION

被引:10
|
作者
GADE, LH [1 ]
JOHNSON, BFG [1 ]
LEWIS, J [1 ]
机构
[1] UNIV CAMBRIDGE,CHEM LAB,LENSFIELD RD,CAMBRIDGE CB2 1EW,ENGLAND
关键词
D O I
10.1039/dt9920000933
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The dynamic behaviour of the Hg-capped decaosmium cluster anions [Os10C(CO)24(HgY)]- [Y = Cl, Br, I, CF3 or Mo(CO)3(cp); cp = eta(5)-C5H5] 2a-2e as well as the Hg-linked cluster [{Os10C(CO)24}2Hg]2- 3 in solution has been investigated by variable-temperature C-13 NMR spectroscopy. The mercury fragment HgY has been found to be highly mobile on the surface of the Os10 cluster core and to undergo rapid exchange between the different mu-bridging and mu(3)-capping sites of the parent cluster. Based on the spectroscopic results a unified model for the observed metal-core fluxionality is proposed.
引用
收藏
页码:933 / 937
页数:5
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