ISSN:
0009-2940
Keywords:
Cyclopentadienylcobalt
;
Alkyne cluster
;
Arene cluster
;
Bond activation, C-H
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Organometallic Clusters with Face-Capping Arene Ligands, 5[1a].-C-H Activation and Formation of a μ3-Arene Complex: Competing Reactions During Assembly of (CpCo)3 Cluster Complexes with Vinylbenzenes as LigandsA number of ring-substituted styrenes R(C6H4)C2H3 (R=CH3, F) reacts with [CpCo(C2H4)2] (1) to give both the cluster complexes [(CpCo)3{μ3-η2:η2:η2-(C6H4R)C2H3}] [2a (R=p-CH3), 2c (R=m-F), 2d (R=p-F)} with Co3 face-capping arenes and [(μ2-H)(μ3-H)(CpCo)3{μ3-1-s̰:2-s̰:η2-HCC(C6H4R)}] [7a (R=p-CH3), 7b (R=o-F), 7c (R=m-F), 7d (R=p-F)] with Co3 face capping alkynes derived from dehydrogenation of the vinyl group. The X-ray structure analysis of 7a confirms the 1-s̰:2-s̰:η2 coordination of the bridging alkyne ligand. In solution the complexes 7 are fluxional and exhibit migration of the alkyne and hydride ligands on the Co3 cluster.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19931260718
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