利用歧化反应的逆反应合成C5H5LnCl2·2LiCl·5THF配合物(Ln=La,Nd)

摘要/Abstract

摘要： 由于镧系收缩和配位不饱和性,导致长期不能合成轻稀土环戊二烯基氯化物。陈文启等^[1]借严格控制氯化稀土与环戊二烯基钠的摩尔比为1:0.5,制备了环戊二烯基轻稀土二氯化物(Pr、Ce、Nd),但即使将这一摩尔比调整为1:0.25也不能得到类似的镧的化合物。李毅等以LnCl₃-LiCl(Ln=La、Nd)的四氢呋喃溶液和等摩尔的C₅H₅Na反应,以比较高的收率制备了[Li(THF)₂]₂(μ-Cl)₄C₅H₅Ln·THF,并测定了其晶体结构。

关键词: 单环戊二稀基稀土氯化物, 三环戍二稀基稀土化合物, 歧化反应

Abstract: It is believed that it is difficult to synthesize cyclopentadienyl light RE chloride from tri-cyclopentadienide compounds of RE because of disproportionation reaction which is related to lanthanide contraction and coordination unsaturation. In this work, the dinuclear organic compounds of RE-lithium were synthesized using THF solution of LnCl₃·nLiCl.The disproportionation reaction is considered to be avoided by the stable effect of chloro-bridge link. Mono-cyclopentadienyl light RE chlorides were synthesized from tri-cyclopentadienide compounds of RE successfully.

Key words: Mono-cyclopentadienyl, light RE chlorides, Tri-cyclopentadienide, Disproportionation reaction

李祥高, 刘静芝, 刘国智. 利用歧化反应的逆反应合成C₅H₅LnCl₂·2LiCl·5THF配合物(Ln=La,Nd)[J]. 应用化学, 1989, 0(4): 62-64.

Li Xianggao, Liu Jingzhi, Liu Guozhi. SYNTHESIS OF C₅H₅LnCl₂·2LiCl·5THF COMPLEXES (Ln=La,Nd)USING RETRO DISPROPORTIONATION REACTION[J]. Chinese Journal of Applied Chemistry, 1989, 0(4): 62-64.

利用歧化反应的逆反应合成C₅H₅LnCl₂·2LiCl·5THF配合物(Ln=La,Nd)

SYNTHESIS OF C₅H₅LnCl₂·2LiCl·5THF COMPLEXES (Ln=La,Nd)USING RETRO DISPROPORTIONATION REACTION

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