in solid 135°C; monitored by TLC on Silufol plates (silica gel layer);

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;

in further solvent(s) dissolving of cis-Pt(Py)2Cl2 in diethylsulfoxide in flask equipped with a refluxer; heating at 80°C for 14 h; cooling; addn. of H2O or Et2O; pptn., filtration, monitoring by NMR;

in further solvent(s) dissolving of trans-Pt(Py)2Cl2 in diethylsulfoxide in flask equipped with a refluxer; heating at 70-100°C for 16 h; cooling; addn. of H2O or Et2O; pptn., filtration, monitoring by NMR;

in further solvent(s) heating of Pt(Py)4Cl2 in diethylsulfoxide in flask equipped with a refluxer; cooling; addn. of H2O or Et2O; pptn., filtration, monitoring by NMR; as mixt. of isomers;

in further solvent(s) dissolving of cis-Pt(Py)2Cl2 in diethylsulfoxide in flask equipped with a refluxer; heating at 80°C for 14 h; further exposure of reaction mixt.; cooling; addn. of H2O or Et2O; pptn., filtration, monitoring by NMR; as mixt. of cis- and trans-isomers;