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

By reaction of the sulfonamides C6H5—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] ·2 H2O 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] · 2 H2O the first space group setting is choosen; i.e. P1 121/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 SO2groups in the different systems. © 1989, Walter de Gruyter. All rights reserved.