in further solvent(s) heating of trans-Pt(Py)(Et2SO)Cl2 in diethylsulfoxide in flask equipped with a refluxer; cooling; addn. of H2O or Et2O; pptn., filtration, monitoring by NMR;

in further solvent(s) dissolving of trans-Pt(Py)(Et2SO)Cl2 in diethylsulfoxide in flask equipped with a refluxer; heating at 100°C for 9 h; cooling; addn. of H2O or Et2O; pptn., filtration, monitoring by NMR;