A novel mixed-ligands holodirected two-dimensional lead(II) coordination polymer as precursor for preparation lead(II) oxide nanoparticles

A novel polymeric Pb(11) complex containing three different ligands [Pb(mu-4 4'-bipy)(mu-OAc)(hfacac)](n) (1) (4 4'-bipy = 4 4' bipyridine OAc(-) = acetate and hfacac(-) = hexafluoroacetylacetonate) has been synthesized and characterized The single-crystal X-ray data showed that the coordination number in Pb(11) ion is eight with holodirected geometry The structure may be considered as a coordination polymer of lead(II) consisting of linear double chains formed by bridging 4 4' bipy ligands and by connecting the acetate-bridged centrosymmetric (Pb(2)(OAc)(2))(2+) nodes The self-assembly of compound 1 is likely to be caused by C-H F-C and pi-pi stacking interactions The thermal stability of compound 1 was studied by thermal gravimetric (TG) and differential thermal analyses (DTA) Nano sized MO was obtained by thermolyses of compound 1 in oleic acid at 290 C under air atmosphere The nano-materials were characterized by scanning electron microscopy X-ray powder diffraction (XRD) and IR spectroscopy The thermal stability of nano-structure MO was studied by thermal gravimetric and differential thermal analyses and showed that there is no reportable loss of weight in the TGA curves that proves the existence of lead(II) oxide (c) 2010 Elsevier BV All rights reserved