Transition metal polymerization catalysts, their synthesis and use in olefin polymerization

An olefin polymerization catalyst system comprising an activator and a transition metal ligand complex having the following formula:

• wherein R1 and R2 (each occurrence) independently represent an aryl, alkyl, or cycloalkyl group having up to 20 carbon atoms;
• R3 and R4 (each occurrence) independently represent an aryl, alkyl, or cycloalkyl group having up to 20 carbon atoms;
• R5 represents an aryl, alkyl, or cycloalkyl group having up to 20 carbon atoms, provided that R4 and R5 may be joined to form a cyclic structure;
• R6 represents an alkyl or aryl group having up to 20 carbon atoms;
• and Mt represents a transition metal selected from the group consisting of Groups 7, 8, 9, 10, 11, and 12 of the Periodic Table of the Elements.