Bismuth(III) Complexes with Bis(dimethylphenyl) Dithiophosphates: Synthesis, Characterization and Crystal Structure of [{(3,5-CH3)2C6H3O}2PS2]3Bi

This work presents four complexes with general formula [{(ArO)(2)PS2}(3)Bi] (1-4), where Ar = 2,4-(CH3)(2)C6H3, 2,5-(CH3)(2)C6H3, 3,4-(CH3)(2)C6H3 and 3,5-(CH3)(2)C6H3, respectively. Reaction of [(ArO)(2)PS2Na] with Bi(NO3)(3)center dot 5H(2)O in toluene in 3: 1 molar stoichiometry afforded the complexes [{(ArO)(2)PS2}(3) Bi]. These newly synthesized complexes have been characterized by elemental analysis, FT-IR and multinuclear NMR (H-1, C-13 and P-31) NMR. The crystal structure of [{(3,5-CH3)(2)C6H3O}(2)PS2](3) Bi (4) has been determined by X-ray crystallography. The compound crystallizes in monoclinic P2(1)/c space group and Bi(III) centre is surrounded by six sulfur atoms from three symmetrically chelating bidentate diphenyl dithiophosphate ligands in a distorted octahedron environment. Screening these complexes for their antifungal activity against Pencillium chrysogenum gave positive results.