The Si-Si bond cleavage reaction of decaisopropylbicyclo[2.2.0]hexasilane with PdCl2(PhCN)2 gave cis- and trans-1,4-dichlorocyclohexasilanes. X-ray crystallography of these products show sterically distorted chair conformations of the Si6 rings. The cis- and trans-cyclohexasilane show rather different absorptions in the UV spectra. By treatment with sodium, both isomers reproduced the bicyclo[2.2.0]hexasilane quantitatively.
十异丙基双环[2.2.0]己
硅烷与PdCl2(PhCN)2的Si-Si键断裂反应产生了顺式和反式1,4-二
氯环己
硅烷。这些产物的X射线晶体学显示Si6环存在空间扭曲的椅子构象。顺式和反式环己
硅烷在紫外光谱中显示出截然不同的吸收。通过
钠处理,两种异构体都能定量地重现双环[2.2.0]己
硅烷。