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 C 6 H 5 -SO 2 -NH 2 and p-Cl-C 6 H 4 -SO 2 -NH 2 with CS 2 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 P2 1 /a with a = 29.778(3), b - 6.202(1). c = 7.169(1) Å and β = 90.33(2)° for K 2 [S 2 C = N-SO 2 -C 6 H 5 ] · 2H 2 O 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 K 2 [S 2 C = N-SO 2 -C 6 H 4 -Cl] · 2H 2 O the first space group setting is choosen; i.e. P 1 1 2 1 /a. The dithiocarbimates are built up of two planar moieties. One plane contains the S 2 C = N-SO framework of each anion while a second plane consists of the S-C 6 H 5 group and the S-C 6 H 4 -Cl group, respectively. The two planes are oriented nearly perpendicular to each other and give rise to conjugation involving the SO 2 groups in the different systems.