Patent ID: 7645844

Claim:
A transition metal complex represented by the following Chemical Formula 1: where M is a group IV transition metal; Cp is a cyclopentadienyl ring or a fused ring including a cyclopentadienyl ring which is capable of forming a η 5 -bonding with M, wherein the cyclopentadienyl ring or the cyclopentadienyl fused ring may be substituted by (C1-C20)alkyl, (C6-C30) aryl, (C2-C20)alkenyl or (C6-C30)aryl (C1-C20)alkyl; R 1 and R 2 are independently hydrogen, (C1-C20)alkyl, (C3-C20)cycloalkyl, (C6-C30)aryl, (C1-C20)alkyl (C6-C30)aryl, (C1-C20)alkyl-substituted or (C6-C30) aryl-substituted silyl, (C6-C30)aryl (C1-C10)alkyl, (C1-C20)alkoxy, (C1-C20)alkyl-substituted or (C6-C20)aryl-substituted siloxy, (C1-C20)alkyl-substituted or (C6-C30) aryl-substituted amino, (C1-C20)alkyl-substituted or (C6-C30)aryl-substituted phosphine, (C1-C20)alkyl-substituted mercapto, or nitro; R 3 and R 4 are independently hydrogen, (C1-C20)alkyl, (C3-C20)cycloalkyl, (C6-C30)aryl, (C1-C20)alkyl (C6-C30)aryl, or (C6-C30)aryl (C1-C20)alkyl; a is an integer 1 or 2; n is an integer from 1 to 3; and X is independently halogen, (C1-C20)alkyl, (C3-C20)cycloalkyl, (C6-C30)aryl (C1-C20)alkyl, (C1-C20)alkoxy, (C3-C20)alkylsiloxy, (C1-C20)alkyl-substituted or (C6-C30)aryl-substituted amino, (C1-C20)alkyl-substituted or (C6-C30) aryl-substituted phosphine, or (C1-C20)alkyl-substituted mercapto.