Syntheses, crystal structure and spectroscopic characterization of novel N-R-sulfonyldithiocarbimate zinc(II) complexes

Two new compounds of the general formula: (Ph4P)(2)[Zn(RSO2N=CS2)(2)], where R=C6H5 (1) and 4-CH3C6H4 (2) were obtained in crystalline form by the reaction of the appropriate potassium N-R-sulfonyldithiocarbimate (RSo(2)N=CS2K2) with zinc(II) acetate dihydrate in dimethylformamide. The compounds crystallise in the centrosymmetric space group of the triclinic system with Z = 2. The single crystal X-ray analysis showed a similarly distorted tetrahedral configuration around the zinc(II) cation due to the bidentate chelation by two sulfur atoms of the N-R-sulfonyldithiocarbimate ligands. Ionic interaction between oppositely charged moieties, i.e., the bis(N-R-sulfonyldithiocarbimato)zincate(II) dianion [Zn(RSO2N=CS2)(2)](2-) and tetraphenylphosphonium cation Ph4P+ and van der Waals interactions determine the crystal packing motif. The IR data are consistent with the formation of zinc-dithiocarbimate complexes. The H-1 NMR and C-13 NMR spectra showed the expected signals for the tetraphenylphosphonium cation and the dithiocarbimate moieties. (C) 2003 Elsevier Ltd. All rights reserved.