| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject complex useful as a catalyst for olefin polymerization or a component for a catalytic composition, containing no mesoisomer, by reacting a specific new tin compound with a transition metal halide, etc. SOLUTION: A new tin compound of formula I [R<1> to R<8> are each H, a 1-10C alkyl, a 6-15C aryl, a Si(R<11> )3 (R<11> is a 1-10C alkyl, a 6-15C aryl, a 3-10C cycloalkyl, etc.), etc.; R<9> is a group of formula II (R<12> and R<13> are each H, a halogen; a 1-10C alkyl, a 6-10C aryl, etc.; M<1> is Si or Ge), etc.], [e.g. rac-4,4'- spirobis(8-sila-4-stanna-indacene), etc.], is reacted with a transition metal compound of the formula MX. [M is titanium, zirconium, hafnium, vanadium, niobium or tantalum; X is a halogen or OR<10> (R<10> is a 1-10C alkyl, a 6-15C aryl, etc.); (n) is an integer of 3-5] to give the objective racemic ansametallocene complex of formula III (X is a halogen, a 1-10C alkyl, a 6-15C aryl or OR<10> ).
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