Benzene-Trisdithiocarbamate Complexes. Study on the Interaction of Benzene with Arsenic-, Antimony-, and Bismuth Trisdithiocarbamate Complexes by NMR Spectroscopy

Solvent shifts induced by the ring current of benzene in several trisdithiocarbamates of arsenic, antimony and bismuth are studied by NMR Spectroscopy. Formation of VAN DER WAALS complexes between trisdithiocarbamates (solute) and benzene (solvent) are proposed. The apparent stoichiometry of the proposed complexes has been found 1:1 and their association constants have been determined from the solvent shifts. The observed solvens shifts and the obtained association constants are correlated to the polarity of C? N bonds in the molecules of dithiocarbamates.