Synthesis And Crystal Structure Of Two New Bi(Iii) Complexes {(Me2ncs2)(3)Bi}(2) And {[(Ch2)(5)Ncs2](2)Bii}(2)

Six bismuth(III) complexes containing dithio-ligands formulated as (R2NCS2)(3)Bi [R2NCS2M = Me2NCS2Na, C4H8NCS2Na, Bz(2)NCS(2)Na] and [(R(2)NCS2)(2)BiI](2) [R2NCS2M = C5H10NCS2Na, (Bu2NCS2Na)-Bu-n, OC4H8NCS2Na] have been obtained by reactions of bismuth( III) halides with dithiocarbamate ligands in 1 : 2 or 1 : 3 stoichiometry. All compounds were characterized by elemental and IR analyses. The crystal structures of complexes 1 and 4 have been determined by X-ray single crystal diffraction. The structure analyses reveal that Bi III in complex 1 adopts a distorted pentagonal-pyramidal coordination, due to its stereochemically active lone pair of electrons. A long Bi center dot center dot center dot S contact of 3.218 ( 3) angstrom leads to dimeric associations of molecules in the crystal structure. The structure of complex 4 is six-coordination with a distorted octahedral configuration. Intramolecular S center dot center dot center dot S weak interactions contribute to the stability and lead to a one-dimensional chain structure.