Preparation and characterization of compounds for di thiocarbamate derivatives and their use as scavenger for some heavy metals in environmental systems

Abstract

The preparation, spectral characterization and Environmental assessment of a range of metal (II) dithiocarbamate-based complexes are reported. The free dithiocarbamate ligand has been prepared by the reaction of 2,2'-((ethane-1,2-diylbis(azanediyl)) bis (methylene)) diphenol with CS₂ in with CS2 in a ethanolic solution of KOH. Macrocyclic complexes were prepared from the reaction of the metallic transient chlorides with the Dithiocarbamate ligand in an ethanolic medium. The suggested geometries around metal centers were determined using a range of spectroscopic techniques and physicochemical. These include;  FTIR, UV-Vis, mass spectroscopy ¹³C,¹H-NMR, magnetic susceptibility measurement, melting point, and Electrical conductivity molar. The spectroscopic and analytical data revealed the formation of Macrocyclic complexes of the first general formula [M(L)]₂ ,where M= Fe(II), Co(II), Zn(II), the complexes of these ions are adopt square planar geometries about the metal center and the second general formula [M(L)(H₂O)₂]₂, where M= Mn(II), Ni(II), Cu(II) indicated octahedral structures around metal center. This forbidden ligand has been used to remove the heavy polluting elements in the water.