Platinum co-ordination compounds

Claim 1

A co-ordination compound of platinum having the general formula ##STR16## in which the X groups are either the same or different and comprise monodentate ligands selected from the class consisting of halogen, pseudohalogen, sulphate, phosphate, nitrate, carboxylate and water, or together comprise a bidentate ligand selected from the class consisting of malonate, cycloalkanedicarboxylate and cycloalkenedicarboxylate ligands, R is selected from the class consisting of hydrogen, lower alkyl, aryl, aralkyl, alkenyl, cycloalkyl and cycloalkenyl, R' is selected from lower alkyl, aryl, alkaryl, aralkyl, alkenyl, cycloalkyl and cycloalkenyl residues, or R and R' together are selected from the class consisting of a methylene or polymethylene, cycloalkyl, cycloalkenyl or aryl residues, R" is hydrogen, methylene or polymethylene, and Y is a functionalising group selected from carboxylic acid and derivatives thereof, ethers, alcohol, thiol, amine, amide, sulphonamide, nitro and halo or forms an ether linkage with adjacent R' and R" groups when the R' and R" groups comprise methylene groups.