Synthese und Molekülstruktur des Tetrakis[bis(trimethylsilyl)methyl]digallans(4) mit GalliumGallium-Bindung
作者:W. Uhl、M. Layh、T. Hildenbrand
DOI:10.1016/0022-328x(89)87138-4
日期:1989.4
Reaction of Ga2Br4·2dioxane with four equivalents of bis(trimethylsilyl)methyllithium yields tetrakis[bis(trimethylsilyl)methyl]digallane(4) (1), which precipitates from n-pentane as well-shaped yellow crystals. Compound 1 is isotypic to the recently synthesized dialane(4) analogue; the metalmetal bond in 1 is found to be shortened by 12 pm compared with that of the aluminium derivative. Both molecules
Ga 2 Br 4 · 2二恶烷与四当量的双(三甲基甲硅烷基)甲基锂反应生成四[双(三甲基甲硅烷基)甲基]二氢戊烷(4)(1),从正戊烷中沉淀出黄色晶状晶体。化合物1与最近合成的Dialane(4)类似物同型;与铝衍生物相比,发现1中的金属金属键缩短了12 pm。两种分子都显示出几乎为平面的核。UV / VIS光谱显示在〜370 nm处归因于金属金属键的吸收。