The reaction of 4-iodobenzenesulfonamide or 4-fluorobenzenesulfonamide with CS 2 and KOH in dimethylformamide yielded the potassium N-R-sulfonyldithiocarbimates, K 2 (RSO 2 N@CS 2) [R = 4-IC 6 H 4 (1) and 4-FC 6 H 4 (2)]. These salts reacted with K 2 [PtCl 4 ] in water/methanol to yield complex anions bis(N-R-sulfonyldithiocarbimato)platinate(II), which were isolated as their tetrabutylammonium salts, (Bu 4 N) 2 [Pt(RSO 2 N@CS 2) 2 ] [R = 4-IC 6 H 4 (3) and 4-FC 6 H 4 (4)]. The structures of 2-4 were determined by X-ray crystallography. The Pt 2+ in both complexes 3 and 4 lies at the inversion centre and the PtS 4 moiety has a distorted square-planar configuration. The compounds were also characterized by IR, 1 H NMR and 13 C NMR spectroscopies, and elemental analyses. The molar conductance data are consistent with the fact that 3 and 4 are dianionic complexes.

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This work describes the syntheses of four new gold(III) complexes with the general formula: K[Au(RSO 2 N=CS 2 ) 2 ] (R = Ph, 2-MeC 6 H 4 , 4-MeC 6 H 4 , 4-ClC 6 H 4 ) from the reaction of hydrogen tetrachloroaurate tetrahydrate with the corresponding potassium dithiocarbimate salts dihydrate in water. The characterization of the complexes has been carried out by elemental analyses, conductance measurements, and IR, UV-VIS, 1 H-and 13 C-NMR spectroscopies. Elemental analyses were consistent with the proposed formulae. The molar conductance data are consistent with the complexes being monoanions complexes. Electronic spectra, vibrational spectra, 1 H-NMR and 13 C-NMR data are consistent with formulation as AuS 4 diamagnetic square planar complexes.