| Abstract
| - Exo,exo derivatives of the efficient catalyst precursors (diisodicyclopentadienyl)titaniumand -zirconium dichloride substituted at the central position have been synthesized. Thesecompounds have been characterized by solution NMR measurements, which also permittedthe calculation of rotational barriers. The solid-state structures of exo,exo-bis(3-diphenylphosphinoisodicyclopentadienyl)titanium and -zirconium dichloride were determined byX-ray crystallography. Unfortunately, after activation by methylalumoxane, these complexesare shown to serve as poor catalysts for the polymerization of propene.
- Exo,exo derivatives of (diisodicyclopentadienyl)titanium and -zirconium dichloride substituted at the central position have been prepared for the purpose of evaluating their rotational barriers and effectiveness as propene polymerization catalysts.
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