Synthesis and structural characterization of a new 2-D lead(II) supramolecule: A new precursor for preparation PbO nanoparticles via thermal decomposition

A new lead(II) supramolecule [Pb4(μ-8-HQuin)6(NO3)2]n (1) was prepared from reaction of ligand 8-hydroxyquinolin (8-HQuin) with lead(II) acetate and sodium nitrate. The compound was characterized by elemental analysis, IR spectroscopy and structurally determined by X-ray single-crystal diffraction. The structure of compound 1 may be considered supramolecule of lead (II) that Pb(II) ions are bridged by 8-HQuin ligands forming metallocyclic chains and making two dimensional array of Pb(II) and 8-HQuin, respectively. Pure phase PbO nanoparticles were obtained by calcination of compound 1 at 400 °C under air atmosphere which was characterized by scanning electron microscopy (SEM) and X-ray powder diffraction (XRD).

► Single crystal of a new 2D Pb(II) supramolecule was synthesized by branch tube method.
► The new supramolecule was characterized by single crystal X-ray diffraction, CHN elemental analysis and IR spectroscopy.
► Calcination of single crystals of new compound at 400 °C yielded PbO nanoparticles.
► PbO nanoparticles were characterized by X-ray powder diffraction (XRD) and scanning electron microscopy (SEM).