Novel metal complex and method for producing alpha-olefin polymer and method for producing alpha-olefin/(meth)acrylate copolymer using the same

A metal complex represented by the following general formula (D):

• [wherein M represents a transition metal belonging to 9th, 10th or 11th group in the periodic table. R3 represents hydrogen or hydrocarbon group having 1 to 20 carbon atoms and optionally containing a hetero atom. L1 represents a ligand coordinated to M. In addition, R3 and L1 may bind each other to form a ring. X1 represents oxygen or sulfur. E1 represents phosphorus, arsenic or antimony. R4 represents each independently hydrogen or hydrocarbon group having 1 to 20 carbon atoms and optionally containing a hetero atom, wherein at least one of R4 is hydrocarbon group having two or more hetero-atom-containing groups. R10, R11, R12 and R13 represent each independently hydrogen, halogen, hydrocarbon group having 1 to 30 carbon atoms and optionally containing a hetero atom, 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 epoxy containing group. Here, R1 represents hydrogen or hydrocarbon group having 1 to 20 carbon atoms. In addition, R2 represents hydrocarbon group having 1 to 20 carbon atoms. M′ represents alkali metal, 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. It should be noted that, a plurality of groups properly selected from R4, R10, R11, R12 and R13 may bind each other to form aliphatic ring, aromatic ring, or hetero ring containing hetero atom selected from oxygen, nitrogen and sulfur. In this case, number of ring member is 5 to 8, and the ring optionally has substituent thereon.]