water in tetrahydrofuran byproducts: LiI; Addn. of MeI soln. to a soln. of Ph2GeHLi in THF (Ar, ambient temp.). The mixt. is hydrolysed.; Extd. (ether), dried and then concd. under reduced pressure. Recrystn.;

in ethylene glycol dimethyl ether Electrolysis; (N2); potential controlled electrolysis at -1,5 V (vs. AgI/Ag referenceelectrode) of soln. of Ge compd. at room temp.; filtered soln. was evapd. in vac., residue was extd. with ether and solvent removed, residue was sepd. by TLC, products were identified by m. p., IR, NMR and MAS;

methyl iodide in tetrahydrofuran; pentane byproducts: isobutane; inert atmosphere; addn. of t-BuLi in pentane to Ph2GeH2 in THF (Li:Ge=2.4:1, -40°C), stirring (-40°C, 40 min), addn. of excess MeI (15 min), then 20°C, 1 h; hydrolysis, extn., concentration (vac.);

in tetrahydrofuran byproducts: t-BuH; Addn. of t-butyllithium in THF (- 40 °C) to Ph2GeH2. Then addn. of MeI.;

in cyclohexane Irradiation (UV/VIS); dissolution of digermane in dry cyclohexane in a quartz tube, degassing in a vacuum, charging with argon, irradiation with a 110 W low pressure Hg arc lamp at room temp. for 2 h; verrifying the photoproducts by GLC and GC-MS;

in tetrahydrofuran inert atmosphere; 20 percent excess Me2SO4, 20°C, (3 h); hydrolysis, extn., concentration (vac.); NMR spectroscopy;

in not given (Ar); react. germanium compd. with methanol at 50°C for 6 h;

in tetrahydrofuran byproducts: (CHCl2)2, CH2Cl2; Irradiation (UV/VIS); (Ar); UV irradn. of a soln. of boron compd. and chloroform in THF at room temp. for 30 min; GLC and GC-MS detection;

in acetonitrile Electrolysis; const.current electrolysis with Pt electrodes, c.d. 0.17 mA/cm**2; analyzed with GC-MS and HPLC;

in acetonitrile Electrolysis; const.current electrolysis with Pt electrodes, c.d. 0.17 mA/cm**2; analyzed with GC-MS and HPLC;