in tetrahydrofuran (N2); addn. of a soln. of quinone in THF to a soln. of germanium complexin THF at room temp., stirring for 2 h; evapn., isolation from THF/pentane, NMR anal.;

in not given (N2); react. of I2 with germanium complex; not isolated, detected by NMR;

in dichloromethane byproducts: ferrocene; (N2); addn. of iron complex to a soln. of germanium complex in CH2Cl2 atroom temp., stirring for 1 h 30 min; evapn., NMR anal.;

in dichloromethane (N2); addn. of a soln. of germanium compd. in CH2Cl2 to a soln. of germanium complex in CH2Cl2 at -78°C, slow warming to room temp.; evapn., extn. with CH2Cl2;

in tetrahydrofuran (N2); addn. of a soln. of SnCl2 in THF to a soln. of germanium complex in THF at -78°C, stirring for 1 h at -40°C; concn., addn. of hexane, addn. of THf to ppt., concn., detected by NMR;