Process for preparation of monocyclopentadienyl metal complex compounds and method of use

DETAILED DESCRIPTION All reference to the Periodic Table of the Elements herein shall refer to the Periodic Table of the Elements, published and copyrighted by CRC Press, Inc.
, 1989.
Also, any reference to a Group or Groups shall be to the Group or Groups as reflected in this Periodic Table of the Elements using the IUPAC system for numbering groups.
The term "carbonium ion" refers to cationic species that possess an electron deficient tri-coordinant carbon atom.
Such ions are also referred to in the art as carbenium ions.
Stable carbonium ions are such cationic species that are able to exist in solution without decomposition for a time period sufficient to undergo the reactions desired of the present invention.
Preferred carbonium ions are those ions that are incapable of coordination with the metal atom or metal complex.
Examples include tropylium (cycloheptatrienylium), trityl (triphenylmethylium), benzene(diazonium) ions.
As used herein, the recitation "noncoordinating, compatible anion" means an anion which either does not coordinate to the metal containing portion of the complex or which is only weakly coordinated thereto thereby remaining sufficiently labile to be displaced by a neutral Lewis base.
A noncoordinating, compatible anion specifically refers to a compatible anion which, within the time frame of the desired end use, when functioning as a charge balancing anion in the catalyst system of this invention does not transfer an anionic substituent or fragment thereof to said cation thereby forming a neutral four coordinate metal complex and a neutral metal byproduct.
"Compatible anions" are also anions that are not degraded to neutrality when the initially formed complex decomposes and that are noninterfering with the desired subsequent polymerization or other uses of the complex.
More particularly the noncoordinating, compatible anion may comprise a single coordination complex comprising a charge-bearing metal or metalloid core, which anion is both bulky and non-nucleophilic