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高全同立构,高分子链上少量的间同Racemic构型r,可设想有两种方式引入:1) 模板式增长差错,将观察到rr共振;2) 立构式增长差错,没有rr共振。Zambelli(1973),用TiCl_3—Al(C_2H_5)_2Cl催化
High isotactic, a small amount of the same racemic configuration r on the polymer chain, two ways can be envisaged to introduce: 1) a template-type growth error that will observe rr resonance; 2) a stereotypical growth error without rr Resonance. Zambelli (1973), catalyzed by TiCl 3 -Al (C 2 H 5) 2 Cl