THE LIGAND POLYHEDRAL MODEL AND ITS APPLICATION TO THE FLUXIONAL BEHAVIOR OF M(4)(CO)(12-N) (M=CO, RH, IR N=1, 2, 4) CLUSTERS

被引:7
|
作者
ROBERTS, YV
JOHNSON, BFG
BENFIELD, RE
机构
[1] UNIV EDINBURGH,DEPT CHEM,EDINBURGH EH9 3JJ,MIDLOTHIAN,SCOTLAND
[2] UNIV KENT,CHEM LAB,CANTERBURY CT2 7NH,KENT,ENGLAND
关键词
LIGAND POLYHEDRAL MODEL; FLUXIONALITY; COBALT COMPLEXES; RHODIUM COMPLEXES; IRIDIUM COMPLEXES; CARBONYL COMPLEXES; CLUSTER COMPLEXES;
D O I
10.1016/0020-1693(94)04248-T
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
A number of mechanisms have been previously proposed to explain the observed fluxional behaviour of related cluster species of the general type M(4)(CO)(12-n)L(n) (M = Co, Rh, Ir; n = 1, 2, 4). Here, a combination of metal core libration and an icosahedral-anticubeoctahedral-icosahedral ligand polyhedral rearrangement, arising from the ligand polyhedral model, is used to account for this observed behaviour. The ideas proposed are general and may be applied to all systems containing icosahedral, cubeoctahedral or anticubeoctahedral ligand shells.
引用
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页码:221 / 227
页数:7
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