Novel dithiocabamate nano Zn(II), Cd(II) and Hg(II) complexes with pyrrolidinedithiocarbamate and N,N-diethyldithiocarbamate

The reaction of the equimolar ratio of ammonium pyrrolidinedithiocarbamate {(NH4)PyDT} and sodium N,N-diethyldithiocarbamate (NaEt2DT) with the divalent ion salts of zinc, cadmium and mercury resulted in the complexes of the type [M(kappa(2)-PyDT)(K-2-Et2DT)]; {M(II) = Zn, Cd, Hg}. These complexes were characterized using different techniques: elemental analysis, molar conductivity, FTIR, H-1 NMR, C-13{1(H)} NMR and HSQC. The results demonstrate the bidentate chelating mode of the two dithiocarbamate ligands through the sulfur atoms to afford a tetrahedral geometry around the metal ion. Surprisingly, these coordination compounds were obtained as nanocomplexes with regular geometrical nanostructures as follows; [Zn(kappa(2)-PyDT)(kappa(2)-Et2DT)] (1) as nanosheets with a thickness of 21-24 nm, [Cd(kappa(2)-PyDT) (kappa(2)-Et2DT)] (2) as nanorods with a diameter of 70-380 nm while [Hg(kappa(2)-PyDT)(kappa(2)-Et2DT)] (3) was found as merged nanospheres with a diameter of 54?70 nm. These nanostructures have been demonstrated using the SEM and X-ray diffraction of the powder. (C) 2020 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the International Conference on Advanced Materials Behavior and Characterization.

Automated summary

The study successfully synthesized metal complexes by reacting two different dithiocarbamate ligands with zinc, cadmium, and mercury ions, and characterized them using various techniques. These complexes were obtained as nanocomplexes with regular geometrical nanostructures such as nanosheets, nanorods, and merged nanospheres.