Yingming Yao, Sheping Song, Q. Shen
Aug 1, 2004
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Journal
Chinese Science Bulletin
Abstract
Reaction of [(ButCp)2Er(μ-Cl)]2 with ButLi in 1 : 1 molar ratio in THF at -78°C; after work-up, afforded the trimetallic erbium tetrahydride complex [Li(THF)4] [(ButCp)2Er(μ-H)3(μ3-H)] (1) by ββ-hydrogen elimination reaction. Crystal structure determination reveals that complex 1 has discrete ion pair structure. The anion is composed of three (ButCp)2Er units to form a triangle array connected by three bridged hydrogen atoms, and the fourth hydrogen atom coordinated to three Er3+ ions. The coordination number for each Er3+ ion is 9.