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二 (甲基环戊二烯基 )二苯胺基镱配合物 (Me C5 H4) 2 Yb NPh2 (THF)对甲基丙烯酸甲酯(MMA)显示极高的催化活性 ,聚合反应可以在 - 40～ 40℃较宽的温度范围内进行 ,聚合活性随茂基配体的体积增大而降低 ,即 Me C5 H4>t- Bu C5 H4>Me5 C5
The bis (methylcyclopentadienyl) diphenylalanine ytterbium complex (Me C5 H4) 2 Yb NPh2 (THF) exhibits very high catalytic activity for methyl methacrylate (MMA) 40 ℃ wide temperature range, the polymerization activity decreases with the increase of the volume of the cyclopentadienyl ligand, Me C5 H4> t-Bu C5 H4> Me5 C5