Ultrasonic assistance syntheses of new nano-sized lead(II) coordination polymers: motifs for PbO preparation

Abstract

Nanoparticles of two new coordination polymers, [Pb(5,5′-dm-2,2′-bpy)Cl2]n (1) and [Pb(5,5′-dm-2,2′-bpy)Br2]n (2), {5,5′-dm-2,2′-bpy = 5,5′-dimethyl-2,2′-bipyridine}, have been synthesized by ultrasonic assistance at different concentrations and characterized by scanning electron microscopy, X-ray powder diffraction, IR spectroscopy and elemental analyses. Metal oxide nanoparticles were prepared from thermal decomposition of compounds 1 and 2 at 600 °C under air atmosphere. Scanning electron microscopy images of the residue which are obtained from calcination of compounds 1, 2 show the formation of lead(II) oxide nanoparticles with an average diameter of about 80 and 90 nm for compounds 1 and 2, respectively.