The syntheses of enaniomeric threo-and erythro-1, 2-diamino-1-phenylpropanes (Ph/Me) and of the racemic 1, 2-diaminophenylethane (Ph/H) are described. These diamines and related N2-methyl-and N1, N2-dimethyl-1, 2-diamino-1-phenylpropanes were transformed into dichloroplatinum (II) complexes.(Ph/H PtCl2, Ph/Me PtCl2, Ph/Me Me PtCl2, Ph/Me-Dime-PtCl2). For the 1H NMR spectroscopical determination of their optical purity ...