The [Ni(S 2 COCH 2 CH 2 CH 3 ) 2 (C 6 H 4 N 2 ) 2 ] adduct of 4-cyanopyridine with [Ni(S 2 COCH 2 CH 2 CH 3 ) 2 ] was synthesized and characterized by elemental analysis, magnetic susceptibility measurement, IR, electronic spectral data, Thermogravimetric analysis/DTA techniques and X-ray diffraction analysis. The Ni atom in the title complex is octahedrally coordinated within a trans-N 2 S 4 donor set, with the Ni atom located on a centre of inversion. The title complex crystallizes in the monoclinic space group P2 1 /c with unit cell parameters a = 11.75(4), b = 11.62(3), c = 9.20(2) Å , b = 104.99(3)°. Crystal structure was solved by direct methods and refined by full matrix least squares procedures to a final R-value of 0.0294 for 1895 observed reflections. The packing of layers of molecules is stabilized by weak C-HÁÁÁN and C-HÁÁÁp interactions.

A series of 1:1 adducts of bis(morpholinedithiocarbamato) complex of VO(IV), 1:1 and 1:2 adducts of bis(morpholinedithiocarbamato) complexes of Ni(II) and Cu(II) with piperidine and morpholine have been synthesized and characterized by elemental analysis, molar conductance, magnetic susceptibility, IR, UV-Vis, and TGA/DTA techniques. Analytical data reveals that VO(IV) complex forms only 1:1 adducts with the formula [VO(morphdtc)2L].H2O while Ni(II) and Cu(II) complexes form both 1:1 and 1:2 adducts with 1:1 adducts having general formula Ni(morphdtc)2.L and Cu(morphdtc)2.L and 1:2 adducts having general formula Ni(morphdtc)2.L2and Cu(morphdtc)2.L2(morphdtc = morpholinedithiocarbamate, L = morpholine and piperidine). Antifungal activity of some complexes has been carried out against the fungal strainFusarium oxysporium. Thermal studies indicate a continuous weight loss. A square pyramidal geometry has been proposed for the 1:1 adducts of Ni(II) and Cu(II) complexes while an octahedral geometry has been proposed for the 1:1 adducts of VO(IV) and for the 1:2 adducts of Ni(II) and Cu(II) complexes.

The Ni2+ ion in the title complex, [Ni(C3H5OS2)2(C6H4N2)2], is in a strongly distorted octa­hedral coordination environment formed by an N2S4 donor set, with the Ni2+ ion located on a centre of inversion. In the crystal, weak C—H⋯S and C—H⋯N inter­actions are observed.

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Two new 1:1 adducts of VO(dedtc) 2 , two 1:1 and two 1:2 adducts of Cu(dedtc) 2 (where dedtc = diethyldithiocarbamate) with n-propylamine and isopropylamine have been prepared. The resulting complexes have been characterized by elemental analysis, molar conductance, magnetic susceptibility, IR and UV-Vis spectral and TGA/DTA techniques. Analytical data reveals that VO(IV) complex forms only 1:1 adducts with the formula [VO(dedtc) 2 L] while Cu(II) complex forms both 1:1 and 1:2 adducts with 1:1 adducts having general formula Cu(dedtc) 2 . L and 1:2 adducts having general formula Cu(dedtc) 2 .L 2 (L = n-propylamine and isopropylamine). Antifungal activity of some complexes has been carried out against the fungal strain Sclerotium rolfsii. Electronic and magnetic measurements indicate a square pyramidal geometry for the 1:1 adducts of Cu(II) complex and an octahedral geometry for the 1:1 adducts of VO(IV) complex and for the 1:2 adducts of Cu(II) complex.