in benzene byproducts: (C10H4)(C6H5)4; 70°C; 1.5 h;; sublimation in vac.;;

in benzene-d6 Irradiation (UV/VIS); under Ar; photolysis of digermabicyclooctadiene in C6D6 in the presenceof thiacycloheptyne at room temp. for 5 min; detd. by (1)H CIDNP spectra;