ansa-Metallocenes with a Ph2Si bridge: molecular structures of HfCl2[Ph2Si(eta(5)-C13H8)(eta(5)-C5H4)] and HfCl2[Ph2Si(C13H9)(eta(5)-C5H4)](2)

Authors
Izmer, VV Agarkov, AY Nosova, VM Kuz'mina, LG Howard, JAK Beletskaya, IP Voskoboynikov, AZ
Citation
Vv. Izmer et al., ansa-Metallocenes with a Ph2Si bridge: molecular structures of HfCl2[Ph2Si(eta(5)-C13H8)(eta(5)-C5H4)] and HfCl2[Ph2Si(C13H9)(eta(5)-C5H4)](2), J CHEM S DA, (7), 2001, pp. 1131-1136
Citations number
20
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
ISSN journal
14727773 → ACNP
Issue
7
Year of publication
2001
Pages
1131 - 1136
Database
ISI
SICI code
1472-7773(2001):7<1131:AWAPBM>2.0.ZU;2-C
Abstract
A mixture of rac- and meso-HfCl2[Ph2Si(eta (5)-C9H6)(2)] was synthesized by treatment of HfCl4 with the dilithium salt of di(1H-inden-1-yl)diphenylsil ane. These complexes were isolated after fractional crystallization in 15.5 and 8.5% yields, respectively. A sterically strained ansa complex HfCl2[Ph 2Si(eta (5)-C13H8)(eta (5)-C5H4)] was synthesized in 62% yield by treatment of HfCl4 with the dilithium salt of cyclopentadienyl(fluoren-9-yl)diphenyl silane. Both this compound, and the by-product of reaction, HfCl2[Ph2Si(C13 H9)(eta (5)-C5H4)](2), were characterized by crystal structure analysis.