研究了双组分体系Cp3 Ln/HSCH2 CH2 NEt2 (Ln=Sm,Yb)催化ε-己内酯聚合反应性能,并与Cp3 Ln/HOCH2 CH2 NMe2和Cp3 Ln(Ln=Sm,Yb)催化结果进行了比较,发现催化活性:Cp3 Yb/HOCH2 CH2 NMe2＞ Cp3Sm/HOCH2CH2NMe2＞ Cp3 Yb/HSCH2CH2NEt2＞ Cp3Sn/HSCH2CH2NEt2＞ Cp3Sm＞ Cp3Yb.发现Cp3Ln(Ln =Sm,Yb)和HSCH2CH2NEt2是通过可逆平衡反应生成相应茂基稀土硫化物的,硫醇的加入可提高Cp3Ln的催化活性.Cp3Ln (Ln =Sm,Yb)和HOCH2CH2NMe2反应则立即完全生成茂基稀土烷氧化合物.测定了[Cp2Sm(μ-OCH2CH2NMe2)]2的晶体结构.
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