hydrogen bromide in water; benzene addn. of a soln. of acid in H2O to a soln. of germane in benzene (N2), stirring for 2 h at 60°C; extn. with pentane, drying over Na2SO4, evapn. (reduced pressure), recrystn. in pentane; elem. anal.;

hydrogen iodide in water; benzene addn. of a soln. of acid in H2O to a soln. of germane in benzene (N2), stirring for 2 h at 60°C; extn. with pentane, drying over Na2SO4, evapn. (reduced pressure), recrystn. in pentane; elem. anal.;

hydrogen fluoride in tetrahydrofuran byproducts: methanol; (Ar or N2), dry solvents; addn. of excess of HF (40percent) to a soln. of the Ge-compd. in THF, stirring at 30°C (30 min);; extn. (benzene), drying (Na2SO4, 12 h), concn. (reduced pressure), redissolving (THF), drying (Na2SO4, 2 h), concn. (reduced pressure), crystn. (benzene); elem. anal.;;