sonochemical synthesis of a new nano lead(ii) coordination polymer with 2,5-bis(2-pyridyl)-3,4-diaza-2,4- hexadiene ligand: a precursor to produce pure phase nano- sized lead(ii) oxide

a new nano-sized lead(ii) coordination polymer, [pb(2-bpdh)(no3)2]n (1); (2-bpdh = 2,5-bis(2-pyridyl)-3,4-diaza-2,4-hexadiene)}, was synthesized by a sonochemical method. the structure of 1 may be considered coordination polymer of lead(ii) consist of metallocyclicchains formed by bridging no3- and 2-bpdh ligands. the thermal stability of compound was studied by thermal gravimetric and differential thermal analyses. the new nano-structure coordination polymer was characterized by scanning electron microscopy, powder x-ray diffraction, elemental analyses and ir spectroscopy. the size of the samples was about 50 nm. nano-particles of pbo were obtained by thermolysis of compound 1in oleic acid as a surfactant at 180 °c under air atmosphere and the size of this pbo particles were about 50 nm.