Transition metal complexes with-functionalized silyl-substituted cyclopentadienyl and related ligands: synthesis and reactivity

Interest in modifying transition metal complexes using substituted cyclopen tadienyl rings has been stimulated in the last years by their potential syn thetic and catalytic applications in different processes. This review will feature mono- and dicyclopentadienyl-transition metal complexes containing silyl-cyclopentadienyl and related indenyl and fluorenyl ligands. All of th ese compounds contain silyl-substituted functionalities which are able to c oordinate the metal center or used to introduce such a type of ligating moi eties. The synthesis and chemical behaviour of these types of compounds are strongly emphasized. Compounds discussed are all those containing silicon- bound substituents which include: (a) hydrosilyl (Si-H); (b) halosilyl(Si-X ); oxosilyl (Si-O); (c) amino- and amido-silyl (Si-N); (d) alkyl- and alken yl-silyl (Si-C) and (d) boron-silyl (SI-B) compounds. A brief remark on the ir most significant structural characteristics is also included. (C) 1999 E lsevier Science S.A. All rights reserved.