Patent ID: 7820582

Claim:
A catalyst precursor represented by the formula: wherein: M is a group 7, 8, 9, or 10 transition metal; N is nitrogen; C is carbon; X is, independently, an anionic monodentate ligand, or both X groups together form a bidentate dianionic ligand; R′ is, independently, a hydrogen, a hydrocarbyl, a substituted hydrocarbyl, a halocarbyl, a substituted halocarbyl, a cyclic ring comprising two R′ groups on the same carbon, a polycyclic ring comprising two R′ groups on the same carbon, a cyclic ring comprising two or more R′ groups on adjacent carbons, or a polycyclic ring comprising two or more R′ groups on adjacent carbons; x is 1, 2, 3 or 4; y is 1, 2, 3 or 4; R 1 , R 2 , R 3 or R 4 is, independently, a hydrogen, a hydrocarbyl, a substituted a hydrocarbyl, a halocarbyl, a substituted halocarbyl, a cyclic ring structure comprising two adjacent R 1 , R 2 , R 3 or R 4 , or a polycyclic ring structure comprising two adjacent R 1 , R 2 , R 3 or R 4 ; R 5 is a hydrogen, hydrocarbyl or halocarbyl; and R 6 is a C 3 to C 50 hydrocarbyl or a C 3 to C 50 halocarbyl, and wherein the central nitrogen atom is a non-pyridinal nitrogen atom and is not bonded to its adjacent atoms by a multibond.