Patent ID: 7671226

Claim:
A transition metal complex represented by the formula (I): wherein M represents a Group 4 transition metal; —Y— represents (c): —C(R 1 )=A 1 - or (d): wherein A 1 and A 2 coordinate to M; A 1 and A 2 each represent a Group 15 element; R 1 represents a hydrogen atom, an optionally substituted C 1-10 alkyl group, an optionally substituted C 6-20 aryl group or an optionally substituted C 7-20 aralkyl group; R 30 represents a hydrogen atom, an optionally substituted C 1-10 alkyl group, an optionally substituted C 6-20 aryl group, an optionally substituted C 7-20 aralkyl group or a silyl group optionally substituted with optionally substituted C 1-20 hydrocarbon group(s); R 2 , R 3 , R 4 and R 5 are the same or different and each represents a hydrogen atom, an optionally substituted C 1-10 alkyl group, an optionally substituted C 1-10 alkoxy group, an optionally substituted C 6-20 aryl group, an optionally substituted C 6-20 aryloxy group, an optionally substituted C 7-20 aralkyl group, an optionally substituted C 7-20 aralkyloxy group, a silyl group substituted with optionally substituted C 1-20 hydrocarbon group(s), or a C 1-20 hydrocarbon-substituted amino group; R 6 , R 7 , R 8 and R 9 are the same or different and each represents a hydrogen atom, a halogen atom, an optionally substituted C 1-10 alkyl group, an optionally substituted C 1-10 alkoxy group, an optionally substituted C 6-20 aryl group, an optionally substituted C 6-20 aryloxy group, an optionally substituted C 7-20 aralkyl group, an optionally substituted C 7-20 aralkyloxy group, a silyl group substituted with optionally substituted C 1-20 hydrocarbon group(s), or a C 1-20 hydrocarbon-substituted amino group; X 1 and X 2 are the same or different and each represents a hydrogen atom, a halogen atom, an optionally substituted C 1-10 alkyl group, an optionally substituted C 1-10 alkoxy group, an optionally substituted C 6-20 aryl group, an optionally substituted C 6-20 aryloxy group, an optionally substituted C 7-20 aralkyl group, an optionally substituted C 7-20 aralkyloxy group or a C 1-20 hydrocarbon-substituted amino group, or X 1 and X 2 , the adjacent R 2 , R 3 , R 4 and R 5 or the adjacent R 6 , R 7 , R 8 and R 9 may be linked to each other to form a ring.