Metal complex and method for producing α-olefin polymer and method for producing α-olefin/(meth)acrylate copolymer using the same

A metal complex represented by formula (D):

• wherein:
• M represents Ni or Pd;
• R3 represents hydrogen or a hydrocarbon group having 1 to 20 carbon atoms and optionally containing a heteroatom;
• L1 represents a ligand coordinated to M;
• R3 and L1 optionally bind each other to form a ring;
• X1 represents oxygen or sulfur;
• E1 represents phosphorus, arsenic or antimony;
• R4 each independently represents hydrogen or a hydrocarbon group having 1 to 20 carbon atoms and optionally containing a heteroatom, wherein at least one of R4 is a hydrocarbon group having two or more heteroatom-containing groups;
• R10, R11, and R12 each independently represent hydrogen, a halogen, a hydrocarbon group having 1 to 30 carbon atoms and optionally containing a heteroatom, OR2, CO2R2, CO2M′, C(O)N(R1)2, C(O)R2, SR2, SO2R2, SOR2, OSO2R2, P(O)(OR2)2-y(R1)y, CN, NHR2, N(R2)2, Si(OR1)3-x(R1)x, OSi(OR1)3-x(R1)x, NO2, SO3M′, PO3M′2, P(O)(OR2)2M′ or an epoxy containing group;
• R13 represents a hydrocarbon group having 1 to 30 carbon atoms and optionally containing a heteroatom;
• R1 represents hydrogen or a hydrocarbon group having 1 to 20 carbon atoms;
• R2 represents a hydrocarbon group having 1 to 20 carbon atoms;
• M′ represents an alkali metal, an alkaline earth metal, ammonium, quaternary ammonium or phosphonium;
• x represents an integer of 0 to 3;
• and
• y represents an integer of 0 to 2,
• such that a plurality of groups selected from the group consisting of R4, R10, R11, and R12 optionally bind each other to form an aliphatic ring, an aromatic ring, or a hetero ring containing a heteroatom selected from the group consisting of oxygen, nitrogen and sulfur, said rings being an optionally-substituted 5 to 8 membered ring.