Synthesis of enantiomeric pureCis-dichloroplatinum(II) amino acid complexes

Abstract
The reaction of potassium tetrachloroplatinate(II) with six representative sulfurcontaining amino acids, namely,d- andl-cysteine,d- andl-methionine and its methyl ester hydrochloride gives the corresponding enantiomerically purecis-dichloroplatinum(II) complexes. This represents the first reported series of well-characterized enantiomerically pure platinum(II) complexes for bothd- andl-amino acids. The spectroscopic properties, including IR,1H-NMR, and13C NMR, of these complexes and their configuration are discussed.