Pugh Thomas, Kerridge Andrew, Layfield Richard A
School of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL (UK).
Angew Chem Int Ed Engl. 2015 Mar 27;54(14):4255-8. doi: 10.1002/anie.201500173. Epub 2015 Feb 5.
Deprotonation of the yttrium-arsine complex [Cp'3Y{As(H)2Mes}] (1) (Cp'=η(5)-C5H4Me, Mes=mesityl) by nBuLi produces the μ-arsenide complex [{Cp'2Y[μ-As(H)Mes]}3] (2). Deprotonation of the As-H bonds in 2 by nBuLi produces [Li(thf)4]2[{Cp'2Y(μ3-AsMes)}3Li], [Li(thf)4]2[3], in which the dianion 3 contains the first example of an arsinidene ligand in rare-earth metal chemistry. The molecular structures of the arsine, arsenide, and arsinidene complexes are described, and the yttrium-arsenic bonding is analyzed by density functional theory.
钇-胂配合物[Cp'3Y{As(H)2Mes}] (1)（Cp'=η(5)-C5H4Me，Mes=均三甲苯基）被正丁基锂去质子化生成μ-砷化物配合物[{Cp'2Y[μ-As(H)Mes]}3] (2)。2中的As-H键被正丁基锂去质子化生成[Li(thf)4]2[{Cp'2Y(μ3-AsMes)}3Li]，即[Li(thf)4]2[3]，其中二价阴离子3包含稀土金属化学中首例亚胂基配体。描述了胂、砷化物和亚胂基配合物的分子结构，并通过密度泛函理论分析了钇-砷键。
