The novel siliconringsystems, 9-oxaoctasilahomocubane ((SiThex)8O, 2) and 5,10-dioxaoctasilabishomocubane ((SiThex)8O2, 3) (Thex = 1,1,2-trimethylpropyl) were obtained by the photo-induced reaction of octasilacubane, (SiThex)8 (1) with dimethylsulfoxide. A significant distortion of the framework is revealed by X-ray crystallography; the SiSi bond distances vary from 2.423(4) and 2.559(4) Å.
该新型硅环系统,9- oxaoctasilahomocubane((SiThex)8 O,2)和5,10- dioxaoctasilabishomocubane((SiThex)8 Ô 2,3)(THEX = 1,1,2-三甲基丙基)由相片获得诱导的八硅氮杂铝(SiThex)8(1)与二甲基亚砜的反应。X射线晶体学分析表明骨架明显变形。SiSi键距在2.423(4)和2.559(4)Å之间变化。