Synthesis, structure, and reactions of the first homoleptic lithium-arsenic compound, [Li(μ-AsR2)]3 (R = CH(SiMe3)2)
作者:Peter B. Hitchcock、Michael F. Lappert、Stephen J. Smith
DOI:10.1016/0022-328x(87)85063-5
日期:1987.2
Reaction of Li with AsClR2 (R = CH(SiMe3)2) affords [Li(μ-AsR2]3 (I), the first structurally characterised dialkylarsenide, which in OEt2 at 25°C yields AsHR2, AsMeR2, AsHR2, or A.sR2 (II) with HCl, MeCl, ButCl, or SnCl2, respectively; upon removal of solvent, II furnishes As2R4 (III), which readily dissociates into II: the As3Li3 ring of I has a boat conformation and the average LiAs bond distance
李的反应与AsClR 2(R = CH(森达3)2),得到[李(μ-ASR 2 ] 3(I),所述第一结构上表征dialkylarsenide,这在OET 2在25℃下产生AsHR 2,阿斯梅尔2,AsHR 2,或A 。 SR 2(II)与盐酸,的MeCl,卜吨Cl或的SnCl 2,分别;在除去溶剂后,II配料如2 - [R 4(III),其容易地离解成二:作为3李3 I的环具有船形结构,平均LiAs键距为2.60(4)Å。