Structure−Reactivity Relationships in Rare-Earth Metal Carboxylate-Based Binary Ziegler-Type Catalysts
作者:Andreas Fischbach、Franc Perdih、Eberhardt Herdtweck、Reiner Anwander
DOI:10.1021/om060052i
日期:2006.3.1
tailor-made rare-earth metal carboxylate complexes was studied, and implications of the degree of Ln alkylation and organoaluminum-chloride-mediated cation formation for 1,3-diene polymerization were investigated. Highly substituted rare-earth metal benzoate complexes Ln(O2CC6H2Me3-2,4,6)3}n (Ln = Y, La, Nd), Ln(O2CC6H2iPr3-2,4,6)3}n (Ln = Y, La, Nd, Gd, Lu), Ln(O2CC6H2tBu3-2,4,6)3(THF)}n (Ln = Y, La)
研究了量身定制的稀土金属羧酸盐配合物的有机铝介导的烷基化,并研究了Ln烷基化程度和有机铝氯化物介导的阳离子形成对1,3-二烯聚合的影响。高度取代的稀土金属苯甲酸酯络合物Ln(O 2 CC 6 H 2 Me 3 -2,4,6)3 } n(Ln = Y,La,Nd),Ln(O 2 CC 6 H 2 i Pr 3 -2,4,6)3 } n(Ln = Y,La,Nd,Gd,Lu),Ln(O 2 CC 6 H 2 t Bu3 -2,4,6)3(THF)} n(Ln = Y,La),Ln(O 2 CC 6 H 3 Ph 2 -2,6)3(THF)} n(Ln = Y,La ),并根据甲硅烷基酰胺路线从Ln [N(SiMe 3)2 ]定量获得Ln(O 2 CC 6 H 3 Mes 2 -2,6)3(THF)} n(Ln = Y,La)。3和烷基(芳基)取代的苯甲酸。这样的低聚羧酸盐配合物不溶于