| abstract |
A transition metal complex having a general formula of M(RNpy)yXz where M is a transition metal selected from groups IVb-VIb of The Periodic Chart of the Elements, RNpy is unsubstituted or substituted amidopyridine derivative, X is a ligand having a valency of 1, y is 1-4, z is 0-5 and y+z is 3-6. This complex can be used for polymerization of olefins together with acceptor compound, such as methylalumoxane. |