in water byproducts: AgI; Pt- and Ag-complex mixed together in water, stirred in dark for 2-3 d; ppt. filtered, filtrate evapd. to dryness;

barium dihydroxide; silver sulphate in water byproducts: AgI, BaSO4; addn. of Ag2SO4 to slight excess of Pt-complex, stirring (4 h), filtration off of AgI, concn., addn. of soln. of ligand (neutralized with Ba(OH)2); filtration off of BaSO4, concn. (crystn.), washing (EtOH, Et2O), drying(vac.); elem. anal.;

potassium hydroxide in water; N,N-dimethyl-formamide Pt-compd. dissolved in DMF with heating, addn. of the acid and aq. KOH, heated in an unstoppered flask at 60°C for 20 h; cooled, filtered, addn. of ether;

1: NaOH / water 2: water View Scheme

in water; N,N-dimethyl-formamide Pt-compd. dissolved in DMF with heating, addn. of the acid and aq. LiOH, heated in an unstoppered flask at 60°C for 20 h; cooled, filtered, addn. of ether;

in water heating Pt-complex and Ba-compd. in water at 60°C for 10 h; filtn., evapn. to dryness, dissolution of residue in DMF, hot filtn., concn., pptn. with ethanol, elem. anal.;

1: cis-[Pt(NH3)2I2] With silver nitrate 2: 1,1-cyclobutanedicarboxylic acid disodium salt in water

in water byproducts: AgI, BaSO4; addn. of cis-Pt(NH3)2I2 (1 mmol) to aq. soln. of Ag2SO4 (0.98 mmol), stirring for 4 h in dark, removal of ppt. (AgI), slowly addn. of BaC6H6O4 to filtrate (cis-(Pt(NH3)2(H2O)2)(SO4)), stirring for 20 min; filtration, evapn. of filtrate to dryness, addn. of MeOH, filtration, washing with Et2O, drying in vac.;

in water; acetone byproducts: AgI, NaNO3; dissolving of cis-Pt(NH3)2I2 (1 mmol) in C3H6O, addn. of AgNO3 (2.2 mmol), stirring for 10-20 min, removal of ppt.(AgI), evapn. of filtrate, crystn. of Pt(NH3)2(ONO2)2 in Et2O, drying in vac., dissolving in H2O, addn. of Na2C6H6O4, stirring for 4-5 days; filtration, evapn. of filtrate to dryness, addn. of MeOH, filtration, washing with Et2O, drying in vac.;

dihydrogen peroxide in water T=20°C;