| 摘要 |
NEW MATERIAL:A compound of a transition metal of group IVB of the periodic table, containing cycloaralkylidene(cyclopentadienyl-1-fluorenyl) group as a ligand and expressed by formula (A<1> is cyclopentadienyl; A<2> is fluorenyl; A<3> is 4-10C cycloalkylidene; R<1> and R<2> are aryl, halogen, etc.; M is Ti, Zr, etc.). EXAMPLE:Cyclohexylidene(cyclopentadienyl-1-fluorenyl)zirconium dichloride. USE:A catalyst component for the production of syndiotactic poly-alpha-olefin. It has high activity. PREPARATION:The compound of formula wherein R<1> and R<2> are halogen can be produced by converting a new cyclohexylidene(cyclopentadiene-1-fluorene) into a dialkali metal compound and reacting the product with a tetrahalide of a transition metal such as Zr. The above starting compound is produced e.g. by successively reacting fluorene with methyllithium and 6,6- pentamethylenefulvene. |
