1) ether, -78 deg C, 15 min, 2) -78 deg C to RT; Yield given. Multistep reaction;

1,2-diiododisilane in pentane T=-75°C;

1) ether, -78 deg C, 15 min, 2) -78 deg C to RT; Yield given. Multistep reaction;

1,2-diiododisilane in pentane T=-75°C;

in pentamethylene under N2, addn. of Re-compound in 5 portions at 0°C, stirred at 20.degrree.C overnight; removal of volatiles in vac., dissolved in n-pentane, filtration, washed with n-pentane, fractd. crystn. at -28°C (filtrate); elem. anal.;

in Petroleum ether T=20°C; 12 h;