5,7,9-octaphenyl-2,4,6,8,10-pentaoxa-,3,5,7,9-tetrasila-1-stannacyclododecane, cyclo-t-Bu2Sn(OSiPh2OSiPh2)2O (3). The molecular structures of 1 and 2 were determined by X-ray diffraction. In both compounds the central Si−O−Si angle amounts to 180°. Remarkably, no hydrogen bonding is observed for 1.
螺环
硅氧烷硅氧烷Ti [(OSiPh 2)4 O] 2的
水解提供1,1,3,3,5,5,7,7-八苯基-1,3,5,7-四
硅氧烷-1,7
-二醇, H(OSiPh 2)4 OH(1),高产率。的反应1与氢氧化
三环己基,环-六角3 SnOH,和二-叔-butyltin氧化物,环- (吨-Bu 2的SnO)3分别给出了1,1,3,3,5,5,7, 7-八苯基-1,7-
三环己基锡烷基-1,3,5,7-四
硅氧烷,(环-Hex 3 SnOSiPh 2 OSiPh2)2 O(2)和1,1-二叔丁基- (丁基-3,5,7,9-八苯基-2,4,6,8,10-五a-,3,5,7,9 -tetrasila -1- stannacyclododecane,环-吨-Bu 2的Sn(OSiPh 2 OSiPh 2)2 O(3)的分子结构1和2。通过X射线衍射确定。在这两种化合物的中央的Si-O-的Si量角至180°。值得注意的是,没有氢键是观察1。