| 摘要 |
PURPOSE: A catalyst for polymerizing olefine monomer is provided for controlling orientation to provide steric hindrance depending on the suitable position for connecting the leg and number of atom for the connection of leg. CONSTITUTION: The catalyst for polymerizing olefine monomer is the transition metal compound expressed by the formula X or XI (wherein M is the transition metal selected from III, IV, V and VI group on the periodic table; A1 and A2 each are independently hydrocarbyl tri-radicals covalently bonded with two adjacent carbon atoms on the cyclo-pentadienyl ring and B, or include at least one of B, N, P, S, O or Si and have 0-10 carbon atoms, are substituted by the radical having non-hydrogen atoms of 1-10, provided that at least two non-hydrogen atoms are same or different; B is the di-radicals having C0-C10 and includes at least one selected from the hydrocarbyl di-radicals covalently bonded to A1 and A2, or B, N, P, S, O or Si atoms, provided that at least two non-hydrogen atoms are same or different; R1 and R2 each include the same or different 1-20 non-hydrogen atoms; X is same or different and include independently 1 value anion ligand such as hydrogen, halogen or hydrocarbyl of C1-C20, alkoxyl, aryloxy, amide, arylamide, phosphide, arylphosphide, sulfide, arylsulfide.
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