methyllithium in tetrahydrofuran; diethyl ether N2-atmosphere; stirring Ge-Si compd. (in THF) with MeLi (in ether) at room temp. for 1 h, addn. of Ph3GeCl (in THF); solvent removal, dissoln. in hexane, filtration, fractional crystn. (hexane);

in hexane byproducts: (C6H5)3SiCH3, C6H5SiH; Irradiation (UV/VIS); (Ar); SiGe compd. in hexane was mixed with 2,3-dimethyl-1,3-butadiene; photolyzed for 1 h in quartz sealed tubes; GC, GC/MS, PMR monitoring; solvent was evapd.; dissolved in pentane; isolated by semipreparative GC;