Search

This work describes the syntheses of four compounds containing [Ni(RSO2N&z.dbnd6;CS2)2]2− anions: (Bu4N)2[Ni(C6H5SO2N&z.dbnd6;CS2)2] (1), (Bu4N)2[Ni(4-ClC6H4SO2N&z.dbnd6;CS2)2] (2), (Bu4N)2[Ni(2-CH3C6H4SO2N&z.dbnd6;CS2)2] (3) and (Bu4N)2[Ni(4-BrC6H4SO2N&z.dbnd6;CS2)2] (4). They were obtained in the crystalline form by the reaction of the appropriate potassium N-R-sulfonyldithiocarbimate (RSO2N&z.dbnd6;CS2K2) with nickel(II) chloride hexahydrate in methanol/water. Elemental analyses were consistent with the proposed formulae. UV–Vis and IR data are consistent with the formation of nickel–sulfur diamagnetic planar complexes. The 1H NMR and 13C NMR spectra showed the expected signals for the tetra-n-butylammonium cation and the dithiocarbimate moieties. Single crystal structure analyses showed that (Bu4N)2[Ni(2-CH3C6H4SO2N&z.dbnd6;CS2)2] crystallizes in the triclinic space group P1¯, and (Bu4N)2[Ni(4-BrC6H4SO2N&z.dbnd6;CS2)2] crystallizes in the monoclinic space group P21/c. In these compounds the Ni atom is coordinated to four S atoms in a distorted square plane geometry. The Ni and S atoms form a plane and Ni&z.sbnd;S bonds are different from each other. In both compounds the Ni atoms are in the crystallographic center of symmetry. [Copyright &y& Elsevier]

Three new complexes of the general formula: [Ni(RSO2NCS2)(dppe)], where R = CH3 (1), CH3CH2 (2), 2-CH3C6H4 (3) and dppe = 1,2-bis(diphenylphosphine)ethane, were obtained in crystalline form by the one-pot reaction of the appropriate potassium N-R-sulfonyldithiocarbimate: RSO2NCS2K2 · 2H2O and 1,2-bis(diphenylphosphine)ethane with nickel(II) chloride hexahydrate in ethanol/water mixture. The complex 1 forms monoclinic crystals (P21/c) with two molecules in the asymmetric unit (Z = 8), while the crystals of the complexes 2 and 3 are orthorhombic, Pbca (Z = 8) and P212121 (Z = 4) respectively, with one molecule in the asymmetric unit. All complexes present a distorted square-planar environment around the Ni atom. The elemental analyses and the IR, 1H NMR, 13C NMR and 31P NMR spectra are consistent with the formation of the nickel(II) complexes with mixed ligands. [Copyright &y& Elsevier]

This work describes the syntheses of three compounds containing [Ni(RSO2N𝄗CS2)2]2− anions: (Bu4N)2[Ni(CH3CH2SO2N𝄗CS2)2] (1), (Bu4N)2[Ni(4-IC6H4SO2N𝄗CS2)2] (2) and (Bu4N)2[Ni(2,5-Cl2C6H3SO2N𝄗CS2)2] (3). They were obtained in the crystalline form by the reaction of the appropriate potassium N-R-sulfonyldithiocarbimate (RSO2NCS2K2) with nickel(II) chloride hexahydrate in methanol/water. Elemental analyses were consistent with the proposed formulae. UV–Vis and IR data are consistent with the formation of nickel–sulfur diamagnetic planar complexes. The 1H NMR and 13C NMR spectra showed the expected signals for the tetrabutylammonium cation and the dithiocarbimate moieties. Single crystal structure analyses showed that 1 crystallizes in the monoclinic space group P21/n, 2 crystallizes in the monoclinic space group P21/c and 3 crystallizes in the triclinic space group P.... In these compounds the Ni atom is coordinated to four S atoms in a distorted square plane geometry due to the asymmetric bidentade chelation by each ligand. [Copyright &y& Elsevier]

Two new compounds of the general formula: (Ph4P)2[Zn(RSO2N&z.dbnd6;CS2)2], where R = C6H5 (1) and 4-CH3C6H4 (2) were obtained in crystalline form by the reaction of the appropriate potassium N-R-sulfonyldithiocarbimate (RSO2N&z.dbnd6;CS2K2) with zinc(II) acetate dihydrate in dimethylformamide. The compounds crystallise in the centrosymmetric space group of the triclinic system with Z=2. The single crystal X-ray analysis showed a similarly distorted tetrahedral configuration around the zinc(II) cation due to the bidentate chelation by two sulfur atoms of the N-R-sulfonyldithiocarbimate ligands. Ionic interaction between oppositely charged moieties, i.e., the bis(N-R-sulfonyldithiocarbimato)zincate(II) dianion [Zn(RSO2N&z.dbnd6;CS2)2]2 − and tetraphenylphosphonium cation Ph4P+ and van der Waals interactions determine the crystal packing motif. The IR data are consistent with the formation of zinc–dithiocarbimate complexes. The 1H NMR and 13C NMR spectra showed the expected signals for the tetraphenylphosphonium cation and the dithiocarbimate moieties. [Copyright &y& Elsevier]