论文部分内容阅读
1970年Hart等人合成了Sc、Y、La和Pr四种稀土苯基有机金属化合物。我们合成了苯基钕和钆有机金属化合物。经分析确认其化学组成为LiNd(C_6H_5)_4、Nd(C_6H_5)_3和Gd(C_6H_5)_3。三苯基钕与氯代烷基铝组成催化剂可引发丁二烯聚合。苯基稀土化合物的合成:取无水氯化稀土2.5g(0.01 mo1)加入反应瓶中,在搅拌下加入四氢呋喃使溶解。冷至零度时,加入含有0.04 mol苯基锂乙醚溶液。反应四小时后,离心分出沉淀物,所得溶液在减压下抽除溶剂,剩余物用苯溶解后,再分出固体部分,得到苯溶液。减压
In 1970, Hart et al. Synthesized four rare earth phenyl organometallic compounds Sc, Y, La and Pr. We have synthesized phenyl neodymium and gadolinium organometallic compounds. The chemical composition was confirmed as LiNd (C_6H_5) _4, Nd (C_6H_5) _3 and Gd (C_6H_5) _3. Triphenyl neodymium and chloroalkylaluminum catalyst composition can lead to butadiene polymerization. Synthesis of Phenyl Rare Earth Compounds: Take 2.5 g (0.01 mo1) of anhydrous rare earth chloride into a reaction flask, and add tetrahydrofuran while stirring to dissolve. Cold to zero when adding 0.04 mol phenyl lithium ethyl ether solution. Four hours after the reaction, the precipitate was separated by centrifugation and the resulting solution was stripped of the solvent under reduced pressure. After the residue was dissolved in benzene, the solid fraction was separated to obtain a benzene solution. stress reliever