[(Pt(.mu.-H)(GeMe3)[P(C6H11)3])2] in hexane addn. of soln. of Pt-complex to hexene, then addn. of Me3GeH, standing for 24 h; fractional distn.; elem. anal.;

in tetrahydrofuran (N2), Schlenk techniques; addn. of Ge compd. to soln. of Mg compd. in C4H8O at 0°C, stirring at room temp. for 12 h; addn. of satd. aq. NH4Cl, extn. with Et2O, washing with satd. NaCl, drying (MgSO4), evapn., distillation (30 mm Hg, 110°C);