Studies of platinum(II) compounds in aqueous solution. Part 2. cis-Pt(NH3)2Cl2

The behaviour of cis-diamminedichloroplatinum(II) in aqueous chloride solutions at room temperature was studied by thin layer chromatography (TLC), thin layer electrophoresis and a combination of the two. While solutions kept in the dark are relatively stable, they decompose if exposed to normal daylight. Up to six cationic, five uncharged and two anionic species could be separated in solutions aged for seven days. The detection reagent used was 4-nitrosodimethylaniline. It is sensitive but could be shown to produce different coloured complexes with different Pt(II) compounds. It does not react at all with some Pt(II) compounds (e.g. Pt(NH3)2+4).