Syntheses, characterization, crystal structure and antifungal activity of four tetraphenylphosphonium bis(N-R-sulfonyldithiocarbimato)zincate(II) salts

AbstractFour new compounds of the general formula: (Ph4P)2[Zn(RSO2NCS2)2] where Ph4P=tetraphenylphosphonium cation, R=4-FC6H4 (1), 4-ClC6H4 (2), 4-BrC6H4 (3) and 4-IC6H4 (4), were obtained by the reaction of the appropriate potassium N-R-sulfonyldithiocarbimate (RSO2NCS2K2) with zinc(II) acetate dihydrate in dimethylformamide. All compounds crystallize in the centrosymmetric space group of the triclinic system. The compounds 2, 3 and 4 are isostructural but compound 1 crystallizes as hemihydrate. The elemental analyses and the IR, 1H NMR and 13C NMR data for 1–4 are consistent with the formation of bis(dithiocarbimato)zinc(II) complexes. These compounds are active against the phytopathogenic fungus Colletotrichum gloeosporioides