Complex compounds of platinum(IV) and O,O-dialkyl-ethylenediamine-N,N′-di-3-propanoate ligands. A structural evidence for geometry of hydrolytic product of some esters

Depending on the ester alkyl group, the reaction of O,O-dialkylethylenediamine-N,N′-di-3-propanoate ligands (R2eddp) with potassium hexachloroplatinate(IV) afforded trans-dichloro(ethylenediamine-N,N′-di-3-propanoato)platinum(IV) and tetrachloro(O,O-dialkyl-ethylenediamine-N,N′-di-3-propanoato)platinum(IV) complexes. The complexes were characterized by elemental analysis, electronic absorption, infrared, 1H and 13C NMR spectroscopy. The trans configuration of [Pt(eddp)Cl2] complex was confirmed by X-ray crystallography.