Synthesis and characterization of ethylene-bridged 1-tert-butyldimethylsiloxy-substituted bis(indenyl) and bis(tetrahydroindenyl)zirconium dichlorides

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Interna författare/redaktörer


Publikationens författare: Leino R, Luttikhedde HJG, Lehtonen A, Ekholm P, Nasman JH
Förläggare: ELSEVIER SCIENCE SA
Publiceringsår: 1998
Tidskrift: Journal of Organometallic Chemistry
Tidskriftsakronym: J ORGANOMET CHEM
Volym: 558
Nummer: 1-2
Artikelns första sida, sidnummer: 181
Artikelns sista sida, sidnummer: 188
Antal sidor: 8
ISSN: 0022-328X


Abstrakt

The synthesis and characterization of three siloxy-substituted zirconocene complexes rac- and meso-ethylenebis[1-(tert-butyldimethyl siloxy)indenyl]zirconium dichlorides (3a,3b) and rac-ethylenebis[1-(tert-butyldimethylsiloxy)-4,5,6,7-tetrahydroindenyl]zirconium dichloride (4) are reported. The molecular structures of 3b and 4 have been determined and reveal that 3b crystallizes in a chiral staggered meso-conformation, whereas 4 adopts the expected C-2 symmetric bent metallocene structure with indenyl-forward conformation of the ligand backbone. In both complexes 3b and 4 the intramolecular oxygen-chlorine distances (3.15-3.30 Angstrom) are close to the sum of their van der Waals radii (3.20 Angstrom). (C) 1998 Elsevier Science S.A. All rights reserved.


Nyckelord

ansa-metallocene, indenyl, siloxy, zirconium

Senast uppdaterad 2019-14-10 vid 06:40