Transition metal complex, catalyst for olefin polymerization, and process for producing olefin polymer with the same

A carbonyl compound represented by a formula (1):

• wherein R1 represents a hydrogen atom,
• an optionally substituted C1-10 alkyl group,
• an optionally substituted C6-20 aryl group or
• an optionally substituted C7-20 aralkyl group;
• R2, R3, R4 and R5 are the same or different and each independently represents a hydrogen atom,
• an optionally substituted C1-10 alkyl group,
• an optionally substituted C1-10 alkoxy group,
• an optionally substituted C6-20 aryl group,
• an optionally substituted C6-20 aryloxy group,
• an optionally substituted C7-20 aralkyl group,
• an optionally substituted C7-20 aralkyloxy group,
• a silyl group substituted with optionally substituted C1-20 hydrocarbon group(s), or
• a C1-20 hydrocarbon-substituted amino group;
• R6, R7, R8 and R9 are the same or different and each independently represents a hydrogen atom, a halogen atom,
• an optionally substituted C1-10 alkyl group,
• an optionally substituted C1-10 alkoxy group,
• an optionally substituted C6-20 aryl group,
• an optionally substituted C6-20 aryloxy group,
• an optionally substituted C7-20 aralkyl group,
• an optionally substituted C7-20 aralkyloxy group,
• a silyl group substituted with optionally substituted C1-20 hydrocarbon group(s) or
• a C1-20 hydrocarbon-substituted amino group, or
• the adjacent R2, R3, R4 and R5 and the adjacent R6, R7, R8 and R9 are linked to each other to form a benzene ring or a cycloalkylene ring;
• provided that 1) the positions of the double bonds of the cyclopentadiene ring are variable or the cyclopentadiene ring represents a mixture of compounds having double bonds at any positions, and 2) neither R2 and R3 nor R4 and R5 are linked to each other and taken together with the cyclopentadiene ring to form a fluorene ring or an indenyl ring.