Synthesis and characterization of metal complexes of N-alkyl-N-phenyl dithiocarbamates

Ammonium N-ethyl-N-phenyl dithiocarbamate (L1) and N-butyl-N-phenyl dithiocarbamate (L2), and their group 12 metal complexes formulated as Zn2L14, CdL12, HgL12, Zn2L24, CdL22, HgL22 have been synthesized and characterized by elemental analyses, IR, 1H and 13C NMR spectroscopy. The crystal structures of the zinc complexes (Zn2L14 and Zn2L24) are also reported. Single crystal analyses of the two complexes revealed the presence of distorted trigonal bipyramidal and tetrahedral coordination geometry about the metal ions. The dithiocarbamate acts as bidentate chelating and bidentate bridging ligands between the metal ions giving centrosymmetric dimeric molecules. The apparent substitution of the ethyl substituents in L1 by the butyl groups in L2 results in profound change in structure.

Graphical abstractZn(II), Cd(II) and Hg(II) complexes of N-ethyl-N-phenyl dithiocarbamate and N-butyl-N-phenyl dithiocarbamate have been synthesized and characterized by analytical and spectroscopic techniques. Single crystal X-ray structures of the zinc complexes are also reported. The dimeric molecules revealed a distorted trigonal bipyramidal and tetrahedral coordination geometry respectively around the zinc metal ions.Figure optionsDownload full-size imageDownload as PowerPoint slide