Synthesis and Crystal Structure of [Pb(gly)2]n; New lead(II) Coordination Polymer with Glycine Ligand

Abstract

[Pb(gly)2]n (1) (gly is the abbreviation of Glycine) have been synthesized and characterized by elemental analyses, IR, 1H NMR and 13C NMR spectroscopy. The single crystal structure of 1 show the complex is 2D coordination polymer with octahedral environment that is formed into 3D supramolecule through hydrogen bond. Structural determination of compound 1 reveals the Pb(II) ion is four coordinated, bonded to a nitrogen, oxygen and two carbon atoms from the Glycine ligand.The crystal structure of compound 1 consists of a 3D supramolecular compound and shows the coordination number in the Pb(II) ions is six. PbO nanoparticles were synthesized by calcination of compound 1 at 500, 550 and 600 °C under air atmosphere. Calcination of the compound 1 at these temperatures yields mixture of orthorhombic and tetragonal PbO nanoparticles and nanorods. The PbO nanostructure was characterized by scanning electron microscopy (SEM) and X-ray powder diffraction (XRD). The thermal stability of compound 1 was studied by thermal gravimetric (TG) and differential thermal analyses (DTA).

Keywords

• coordination polymer
• nano particle
• lead(ii) oxide
• glycine