SUPPORTED CATALYSTS WITH A DONOR-ACCEPTOR INTERACTION

摘要

The present invention relates to compounds in which a transition metal is complexed with two ligand systems and the two systems are reversibly connected to one another by at least one bridge consisting of a donor and an acceptor. The resultant co-ordination bond between the donor atom and the acceptor atom produces a positive (partial) charge in the donor group and a negative (partial)charge in the acceptor group: .DELTA.+ .DELTA.¢Donor group ~ Acceptor group! The invention also relates to the use of these supported catalysts with a donor-acceptor interaction as polymerization catalysts.