Third International Symposium On Environmental and Water
Resources Engineering
2-3 June 2015, Tehran, Iran
Reduction toxicity of lead by complexing whit the
5,5'-dm-2,2'-bpy ligand
Farzin Marandi *1, Salimeh Gohari 2, Somayeh Haghnazari 3
1. Department of Chemistry, Payame Noor University, Tehran, Iran, f.marandi@gmail.com
2. Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran,
s_goohary@yahoo.com
3. Department of Chemistry, Payame Noor University, Khoy, Iran, haghnazari92@gmail.com
Abstract
In order to reduction of lead ions toxicity, formation of a stable complex of 5,5'-dm-2,2'bpy ligand and the toxic ions of lead(II) has been investigated X-ray diffraction (XRD)
analysis has been used to characterize the structure of the synthesized complex. The
analysis confirmed polymeric structure for the synthesized complex. the polymeric
structure contains a lead ion which attached to two N atoms of 5,5'-dm-2,2'-bpy ligands
and four chlorine atoms, [Pb(5,5'-dm-2,2'-bpy)Cl2]n. Coordination number of lead in the
mentioned complex was 6. Due to the π ... π and Cl ... H interactions, the one-dimensional
polymer complex spread to two-dimensional network. Crystallographic results showed
that the synthesized complex is a one-dimensional coordination polymer. Complex
formation stopped the normal activity of toxic lead ions from adverse reactions.
Key words: Lead(II), 5,5'-dm-2,2'-bpy ligand, coordination polymer.