Bis(tetra­phenyl­phospho­nium) bis­[N-(phenyl­sulfon­yl)dithio­carbimato-κ2 S,S′]platinate(II) monohydrate

The asymmetric unit of the title compound, (C24H20P)2[Pt(C7H5NO2S3)2]·H2O, consists of two tetra­phenyl­phospho­nium cations, two half bis­[N-(phenyl­sulfon­yl)dithio­carbim­ato]platinate(II) dianions and one water mol­ecule. The anions are completed by crystallographic inversion symmetry associated with the central PtII ion. The PtII ion is doubly S,S′-chelated by two symmetry-related phenyl­sulfonyl­dithio­carbimate ligands, forming a slightly distorted square-planar configuration. Besides the electrostatic attraction between oppositely charged ions in the crystal packing, intra­molecular C—H⋯O and several inter­molecular C—H⋯O, C—H⋯N and O—H⋯O hydrogen-bonding inter­actions between the cations, anions and water mol­ecules are observed

Bis(tetra­phenyl­phospho­nium) bis­[N-(2,5-dichloro­phenyl­sulfon­yl)dithio­carbimato(2−)-κ2 S,S′]platinate(II)

In the title salt, (C24H20P)2[Pt(C7H3Cl2NO2S3)2], the PtII ion (site symmetry ) is coordinated by two S,S′-bidentate N-(2,5-dichloro­phenyl­sulfon­yl)dithio­carbimate ligands, resulting in a slightly distorted PtS4 square-planar geometry. In the crystal, a C—H⋯O inter­action is observed, as well as electrostatic attraction between the oppositely charged ions

Syntheses, crystal structure and spectroscopic characterization of new platinum(II) dithiocarbimato complexes.

The reaction of 4-iodobenzenesulfonamide or 4-fluorobenzenesulfonamide with CS2 and KOH in dimethylformamide yielded the potassium N-R-sulfonyldithiocarbimates, K2(RSO2N@CS2) [R = 4-IC6H4 (1) and 4-FC6H4 (2)]. These salts reacted with K2[PtCl4] in water/methanol to yield complex anions bis(N-R-sulfonyldithiocarbimato) platinate(II), which were isolated as their tetrabutylammonium salts, (Bu4N)2[Pt(RSO2N@CS2)2] [R = 4-IC6H4 (3) and 4-FC6H4 (4)]. The structures of 2–4 were determined by X-ray crystallography. The Pt2+ in both complexes 3 and 4 lies at the inversion centre and the PtS4 moiety has a distorted square-planar configuration. The compounds were also characterized by IR, 1H NMR and 13C NMR spectroscopies, and elemental analyses. The molar conductance data are consistent with the fact that 3 and 4 are dianionic complexes