Abstract: A metal complex of the formula (1) InCyLMZp (1), wherein M is a group 4 metal, Z is an anionic ligand, p is number of 1 to 2, InCy is an indole fused cyclopentadienyl-type ligand of the formula (2) wherein R1 independently is a C1-C4-alkyl, m is a number of 0 to 4, R2 is a C1-C10-alkyl, C5-C10-cycloalkyl, or a C6-C10-aryl unsubstituted or substituted with C1-C10-alkyl or C1-C4-dialkyl amino, R3, R4 and R5 each is independently selected from hydrogen, C1-C4-alkyl, C6-C10-aryl unsubstituted or substituted with C1-C4-alkyl, halide, or both of C1-C4-alkyl and halide and, L is an amidinate ligand of the formula (3a) wherein the amidine-containing ligand (3a) is bonded to the metal M via the imine nitrogen atom N2, wherein R7 is independently selected from C1-C4-alkyl and halide and q is a number of 0 to 4, Sub4 is a cyclic or linear aliphatic or aromatic substituent.

Abstract: A metal complex of the formula (1) InCyLMZp??(1), wherein M is a group 4 metal Z is an anionic ligand, p is number of 1 to 2, preferably 2, InCy is an indole fused cyclopentadienyl-type ligand of the formula (2) wherein R1 means for each index m individually a C1-C4-alkyl that substitutes a hydrogen atom of the benzene ring, m is a number of 0 to 4, preferably 0 to 2, in particular 0, R2 means C1-C10-alkyl, C5-C10-cycloalkyl, and an unsubstituted or C1-C10-alkyl or C1-C4-dialkyl amino substituted C6-C10-aryl, in particular C1-C4-alkyl substituted phenyl, more preferably methyl, phenyl or di-C1-C4-alkyl substituted phenyl, in particular di-tert.