133897-32-2Relevant academic research and scientific papers
ansa-metallocenes with a Ph2Si bridge: Molecular structures of HfCl2[Ph2Si(η5-C13H8) (η5-C5H4)] and HfCl2[Ph2Si(C13H9)(η5 -C5H4)]2
Izmer, Vyacheslav V.,Agarkov, Anton Y.,Nosova, Valentina M.,Kuz'mina, Lyudmila G.,Howard, Judith A.K.,Beletskaya, Irina P.,Voskoboynikov, Alexander Z.
, p. 1131 - 1136 (2001)
A mixture of rac- and meso-HfCl2[Ph2Si(η5-C9H6 )2] was synthesized by treatment of HfCl4 with the dilithium salt of di(1H-inden-1-yl)diphenylsilane. These complexes were isolated after fractional crystallization in 15.5 and 8.5% yields, respectively. A sterically strained ansa complex HfCl2[Ph2Si(η5-C13H8) (η5-C5H4)] was synthesized in 62% yield by treatment of HfCl4 with the dilithium salt of cyclopentadienyl(fluoren-9-yl)diphenylsilane. Both this compound, and the by-product of reaction, HfCl2[Ph2Si(C13H9)(η5 -C5H4)]2, were characterized by crystal structure analysis.
Process for preparing cyclopentadienyl group-containing silicon compound or cyclopentadienyl group-containing germanium compound
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, (2008/06/13)
Disclosed is a process for preparing a cyclopentadienyl group-containing silicon compound or a cyclopentadienyl group-containing germanium compound, comprising reacting (i) a lithium, sodium or potassium salt of a cyclopentadiene derivative with (ii) a silicon halide compound or a germanium halide compound in the presence of a cyanide or a thiocyanate. The cyanide or the thiocyanate is preferably a copper salt. According to the process of the invention, a cyclopentadienyl group-containing silicon compound or a cyclopentadienyl group-containing germanium compound, which is very useful for the preparation of a metallocene complex catalyst component, can be prepared in a high yield for a short period of time.
