in dichloromethane room temp., N2 atm.; to a soln. of Pt-complex in CH2Cl2 solid diarsine was added, the mixt. was stirred at room temp. for 3 h; filtered, washed with diethyl ether, vac. dried; elem. anal.;

in dimethylsulfoxide-d6 room temp., N2 atm.; HCl(or HClO4) was added to a soln. of complex in DMSO-d6; not sepd., detected by NMR spectra;

in dimethylsulfoxide-d6 room temp., N2 atm.; CH2Cl2 was added to a soln. of complex in DMSO-d6; not sepd., detected by NMR spectra;