Dithiocarbimates from Sulfonamides, Part 1: Preparation and X-Ray Crystal Structures of K2[S2C = N—SO2—C6H5] · 2H2O and K2[S2C = N—SO2—C6H4—Cl] · 2H2O

Abstract

Abstract Dithiocarbimates. Sulfonamides, X-Ray. Sulfones By reaction of the sulfonamides C6H5-SO2-NH2 and p-Cl-C6H4-SO2-NH2 with CS2 in the presence of bases the corresponding dithiocarbimates have been obtained in form of their potassium salts and characterized by means of X-ray structural analysis. Both compounds crystallize in the space group P21/a with a = 29.778(3), b - 6.202(1). c = 7.169(1) Å and β = 90.33(2)° for K2[S2C = N-SO2-C6H5] · 2H2O and a = 31.517(3). b = 7.189(1), c -6.196(1) Å and β = 90.10(1)° for the Cl-substituted species, respectively. A relation between both crystal structures becomes obvious when for K2[S2C = N-SO2-C6H4-Cl] · 2H2O the first space group setting is choosen; i.e. P 1 1 21/a. The dithiocarbimates are built up of two planar moieties. One plane contains the S2C = N-SO framework of each anion while a second plane consists of the S-C6H5 group and the S-C6H4-Cl group, respectively. The two planes are oriented nearly perpendicular to each other and give rise to conjugation involving the SO2 groups in the different systems.