Catalyst for olefin polymerization and production method for polar group-containing olefin-based polymers

A catalyst for olefin polymerization containing a metal complex represented by the following general formula (C1):

• wherein, M represents Pd, X represents a phosphorous atom (P) or arsenic atom (As), Y represents a divalent group selected from a substituted or unsubstituted methylene group (—CH2—), substituted or unsubstituted imino group (—NH—), oxy group (—O—) or substituted or unsubstituted silylene group (—SiH2—), R5 represents a substituent selected from the group consisting of a hydrogen atom, halogen atom, hydrocarbon group having 1 to 30 carbon atoms, hydrocarbon group having 1 to 30 carbon atoms substituted with a halogen atom, hydrocarbon group having 2 to 30 carbon atoms substituted with an alkoxy group having 1 to 10 carbon atoms, hydrocarbon group having 7 to 30 carbon atoms substituted with an aryloxy group having 6 to 20 carbon atoms, hydrocarbon group having 3 to 30 carbon atoms substituted with an amido group having 2 to 10 carbon atoms, alkoxy group having 1 to 30 carbon atoms, aryloxy group having 6 to 30 carbon atoms, and acyloxy group having 2 to 10 carbon atoms, R6 and R7 respectively and independently represent an alkoxy group, aryloxy group, silyl group, amino group or hydrocarbon group having 1 to 120 carbon atoms optionally substituted with one or more substituents selected from a halogen atom, alkoxy group or aryloxy group, at least one of R6 and R7 represents a tertiary alkyl group represented by general formula (2):
• wherein, R8, R9 and R10 respectively and independently represent a hydrocarbon group having 1 to 30 carbon atoms, R8, R9 and R10 may respectively bond to form a ring structure, and in the formula, bonds between the carbon atom and X in general formula (C1) are also indicated, R6 and R7 may respectively bond to form a ring structure, L represents an electron donating ligand, and q represents ½, 1 or 2.