| 摘要 |
A novel titanium (III)-based #-diketonate-coordinated compound is disclosed for catalyzing the polymerization reaction of syndiotactic polystyrenes. The titanium (III)-based compound is represented by the following formula 1: wherein X is a C 1 # C 12 alkoxy or amine group, or a halogen atom; R is a C 1 # C 12 alkyl, aryl, or alkylsilane group. Preferably, X is N(SiMe 3 ) 2 - or OMe-, and R is phenyl, methyl, or t-butyl. The titanium (III)-based compounds are prepared by titanium trichloride with diketone and tetrahydrofuran to form Ti(AcAc)Cl 2 (THF) 2 and then reacting this compound with either aminosilane or alcohol.
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