Condensations of R(Ph)GeCl2 (R = t-Bu and R = CEt2Me) with Mg/MgBr2 in THF produced cyclotetragermanes [R(Ph)Ge]4, which were converted to [R(Cl)Ge]4 by treatment with HCl/AlCl3 or with CF3SO3H followed by CH3COCl. The crystal structure of [t-Bu(Cl)Ge]4 was established by X-ray diffraction. Unusual configurational behavior of cyclotetragermanes is also described.
R(Ph)GeCl2(R = t-Bu和R = CEt2Me)与Mg/MgBr2在THF中的缩合物产生了环四
锗烷[R(Ph)Ge]4,通过HCl/
AlCl3或CF3SO3H处理,再加入CH3COCl,可将其转化为[R(Cl)Ge]4。通过X射线衍射确定了[t-Bu(Cl)Ge]4的晶体结构。还描述了环四
锗烷的异常构象行为。