Patent ID: 8324197

Claim:
A trans-platinum (II) complex of formula trans-[Pt(carboxylato) 2 (L)(L′)] where carboxylato =a ligand derived from an anion of a carboxylic acid, and wherein said trans-platinum (II) complex is represented by formula (I) as follows: wherein i) RCOO— is a carboxylate anion of a carboxylic acid and R is H or an alkyl group which may be substituted or unsubstituted; and ii) L and L′ are both planar heterocyclic amines, or one of L or L′ is a planar heterocyclic amine and the other is selected from the group consisting of NH 3 a branched aliphatic amine, an iminoether, a primary amine, a secondary amine and an aliphatic nitrogen-containing heterocycle.