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η~3-2-甲基烯丙基稀土配合物的合成及其催化性质的研究
SYNTHESIS AND CATALYTIC PROPERTIES OF η~3-2-METHYLALLYL-RARE EARTH COMPLEXES
【摘要】 <正> 1975年CouPs和Wailes首次合成了第一个η3-烯丙基稀士配合物——Cp2Sc(η3-C3H5)。由于该类配合物稳定性差难于合成,目前为止文献上仅有几篇报道。其中代表性的例子是1991年吴文玲等人合成的(η3-cC3H5)2CeCl5Mg2(tmed)2,并测定了其晶
【Abstract】 Three η3-allyl-rare earth complexes were synthesized by reacting anhydrous lanthanide trichloride with CH2=C(CH3)-CH2MgCl at 1:2 molar ratio in tetrahydrofuran. The complexes with the general formula (η3-2-CH3-C3H4)2LnCl5Mg2(tmed)2(Ln=La, Ce, and Nd)were characterized by elemental analyses, IR spectra and MS. These complexes can polymerize styrene and isoprene, giving atactic polystyrene and equal binary polyisoprene respectively.
【关键词】 烯丙基稀土配合物;
苯乙烯;
异戊二烯;
聚合;
【Key words】 allyl-rare earth complex; styrene; isoprene; polymerization;
【Key words】 allyl-rare earth complex; styrene; isoprene; polymerization;
- 【文献出处】 应用化学 ,Chinese Journal of Applied Chemistry , 编辑部邮箱 ,1992年06期
- 【被引频次】2
- 【下载频次】34