unit has been prepared, rac-2-(1′-hydroxy-2′,2′-dimethylpropyl)-6-(1″,1″-dimethyl-cyclopentadienylmethyl) pyridine dilithium salt, LLi2 (rac-4) that is analogous to the ligands present in CGC. After reacting the dilithium salt of the ligand with ZrCl4 in a molar ratio of 1:1 in THF the complex LZrCl2·THF (rac-5) was obtained which forms an insoluble oligomeric species after the loss of THF upon purification
制备了新的单
环戊二烯基
配体,其包含通过配位的2,6-
吡啶单元束缚的另外的位点,rac -2-(1'-羟基-2',2'-二甲基丙基)-6-(1“,1”-二甲基-
环戊二烯基甲基)
吡啶二
锂盐,LLi 2(rac - 4),类似于CGC中存在的
配体。使
配体的二
锂盐与ZrCl 4以1:1的摩尔比在THF中反应后,得到复合物LZrCl 2 ·THF(rac - 5),在纯化后THF损失后形成不溶性低聚物。从母液中得到两个晶体,分子式为LHZrCl 3(rac- 6)和LH 2的ZrCl 4 ·THF(外消旋- 7)分离,其X-射线晶体结构的报道。LLi 2与Y(OTf)3的反应提供了可能的二聚体[LYOTf] 2(rac - 8),从中获得了复合物[LY(CH 2 Si(CH 3)3)] 2(rac - 9)与LiCH 2 Si(CH 3)3反应后。