in benzene stirring for 3 days under N2-atmosphere, filtering off an off-white ppt. (probably a polymeric organotin compound), adding 1 N HCl, stirring (few minutes), evaporating the benzene layer gave {IrBr(COD)}2, water layer afforded the ammonium salt; identification: (1)H-NMR, FD mass spectroscopy;

hydrogen in dichloromethane-d2 H2 is bubbled through a soln. of Ir-complex at room temp.;

hydrogen in dichloromethane-d2 H2 is bubbled through a soln. of Ir-complex at room temp.;