Syntheses and spectroscopic study of a new series of mixed-ligand complexes of As(III) and Sb(III) with dithio-ligands

Abstract

Seventeen new mixed-ligand complexes of As(III) and Sb(III) with dithio-ligands have been prepared and studied. The preparation of the mixed-ligand complexes has been made by reacting the corresponding iodobis(dialkyldithiocarbamate) complexes with either CS2 and HNR2 or the sodium salt of the dithiocarbamate. Alteration of the second method facilitated the preparation of the mixed-ligand dithiocarbamate–xanthate complexes of Sb(III) whereas the analogous arsenic compounds have not been isolated. The study of these new compounds reveals that their stability depends on the nature of both ligand and central atom. The spectroscopic data of the compounds are discussed and compared with those of similar complexes of Bi(III).