in acetonitrile Kinetics; byproducts: I3(1-), Cl(1-); excess of NEt4I, 0.0514 M NEt4ClO4, 25-45°C; not isolated, reaction followed by UV/VIS spectroscopy;

hydrogenchloride; dihydrogen peroxide in N,N-dimethyl-formamide treatment of hot soln. of Pt-complex with HCl and H2O2; addn. of H2O, pptn. on standing overnight, filtration, washing (H2O), drying (vac.); elem. anal.;

in acetonitrile Kinetics; excess of HAuCl4 and NEt4Cl, 0.1 M NEt4ClO4, 30-50°C; not isolated, reaction followed by UV/VIS spectroscopy;