Syntheses, characterization, and antimicrobial properties of nickel(II) dithiocarbamate complexes containing NiS 4 and NiS 2 PN moieties

Complexes 1 and 2 were further characterized by single-crystal X-ray structural analysis. The single-crystal X-ray structural analysis indicates a slightly distorted square planar geometry.

In 2 and 3 , the influences of the auxiliary ligands (PPh 3 , NCS, and NC) on their steric and electronic properties were observed. Thermal studies of the complexes showed decomposition starting at 250–300 °C, leading to formation of nickel sulfide phases around 400 °C. The complexes were screened against some bacteria strains, Staphylococcus aureus , S treptococcus pneumoniae , Bacillus subtilis , Escherichia coli , K lebsiella oxytoca and P seudomonas aeruginosa , and two fungi species, A spergillus niger and F usarium oxysporum .