Infrared investigations on the dithioformamidinium dihalides

Article abstract of DOI:10.1016/0584-8539(83)80035-X

The monohydrate dithioformamidinium dihalides <(H2N)2CS->2X2*H2O (X = Cl, Br, I) and the anhydrous dibromide have been investigated by i.r. spectroscopy.The νNH and δNH2 bands were identified from the deuterated dithioformamidinium di-iodide.With respect to thiourea the νNH and δNH2 frequencies decrease and increase, respectively, as in other sulphur-bonded derivatives of thiourea, and the ν_asCN2 and νCS frequencies increase and decrease, respectively, in agreement with the increased CN double bond character and the formation of a C-S single bond.