Spectral and structural studies on Ni(II) dithiocarbamates: Nickel sulfide nanoparticles from a dithiocarbamate precursor

•Synthesis and NMR spectral studies on Ni(II) dithiocarbamates.•Single crystal X-ray structural analysis of [Ni(4-dpmpzdtc)2], [Ni(4-dpmpzdtc)(PPh3)(NCS)] and [Ni(bupcbzdtc)(PPh3)(NCS)].•Fabrication of nickel sulfide nanospheres by solvothermal method and morphology evaluation by SEM and TEM.

Three new planar Ni(II) dithiocarbamate complexes; [Ni(4-dpmpzdtc)2] (1), [Ni(4-dpmpzdtc)(PPh3)(NCS)] (2) and [Ni(bupcbzdtc)(PPh3)(NCS)] (3) (where, 4-dpmpzdtc = 4-(diphenylmethyl)piperazinecarbodithioato anion, bupcbzdtc = N-butyl-N-(4-chlorobenzyl))dithiocarbamato anion and PPh3 = triphenylphosphine) with “NiS4” and “NiS2PN” chromophore units were synthesized and characterized by single crystal X-ray structural analysis as well as UV–Vis, IR and NMR (1H, 13C and 31P) spectroscopy. For 2, 1H–1H COSY spectrum was also recorded. Single crystal X-ray structural analysis of 1–3, reveals a slightly distorted square planar geometry in all three complexes wherein the steric and electronic influence of auxiliary ligands PPh3 and NCS− induces change in the bonding parameters of the latter two complexes (especially in 3). Nickel sulfide nanoparticles were produced from complex 1 by solvothermal synthesis. The morphology and a qualitative phase analysis of the nanoparticles are also viewed in the study.

Graphical abstractNMR spectral and single crystal X-ray structural studies on three new Ni(II) dithiocarbamates have been reported. Solvothermal preparation of nickel sulfide nanospheres from dithiocarbamate precursor is also reported and the product was analyzed by XRD, SEM and TEM.Figure optionsDownload full-size imageDownload as PowerPoint slide