Synthesis of 1-(Methylthio) phenazine Platinum (II) and Its S-demethylated Complexes

Abstract

1-(Methylthio) phenazine (mtph) reacts with platinum (II) and palladium (II) in acetone-water to give orange complexes. The mtph coordinates to metal through the sulfur and nitrogen atoms as a bidentate ligand, and the two halogen atoms of the complexes are in cis-configuration. When the orange complex, PtCl₂ (mtph), was refluxed in N, N-dimethylformamide, a reddish violet S-demethylated complex was produced. On the other hand, PdCl₂ (mtph) did not give any demethylated complexes under similar conditions.