Synthesis and Spectral Studies of Ni(II) Dithiocarbamate Complexes and Their Use as Precursors for Nickel Sulphides Nanocrystals

Ni(ii) dithiocarbamate complexes have been synthesized and characterized by uv-vis,ftir,and nmr spectroscopic techniques. electronic spectra measurements indicate that the complexes are four-coordinate square planar geometry while the ftir confirmed that the dithiocarbamates act as bidentate chelating ligands. the compounds were used as single source precursors and thermolysed at 220�c to prepare hda-capped nis nanocrystals which were characterized by absorption and photoluminescence (pl) spectra measurements,powder x-ray diffraction (pxrd),transmission electron microscopy (tem),scanning electron microscopy (sem),and energy dispersive spectroscopy (eds). absorption spectra studies showed that the synthesized nis nanoparticles are blue-shifted relative to the bulk material and pl studies showed emission maxima that are red-shifted compared to the absorption band edges. the xrd patterns of the as-prepared nis nanoparticles revealed cubic crystalline phases. tem images showed spherical and close-to-spherical nanocrystals with the size in the range 12-38 nm for nis1,8-11 nm for nis2,and 9-16 nm for nis3. sem images showed homogeneous surface morphology and eds confirmed the presence of ni and s and the formation of nis nanoparticles. � 2016 azile nqombolo and peter a. ajibade.