Abstract The optimum conditions for selectively cleaving off two phenyl groups in Ge 2 Ph 6 by trichloroacetic acid have been determined. Neither trihaloacetic acids nor HCl/AlCl 3 nor reactive tetrahalides MCl 4 are suitable reagents for cleaving one phenyl group alone. The 13 C NMR chemical shifts of functional phenyl-mono-and-digermanes are given. The crystal structure of 1, 2-bis (trichloroacetate) tetraphenyldigermane has been determined and ...
