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Two mercury(II) complexes [Hg(4-mtrt)Cl2] (1) and [Hg(4-mtrt)Br2] (2), have been synthesized from reaction of ligand 4-methyl-4H-1,2,4-triazole-3-thiol (4-mtrt) with HgCl2 and HgBr2. Structures of compound 1–2 have been characterized by elemental analysis, IR spectroscopy and single crystal X-ray diffraction. The nanoparticles of compound 1–2 have been prepared by sonochemical method. The new nano-structures were characterized by scanning electron microscopy, elemental analysis, IR spectroscopy and X-ray diffraction (XRD). The size of the samples prepared by sonochemical method are about 50 and 60 nm in compounds 1 and 2 respectively.

Two new lead(II) nitrate coordination polymers from ligand 1,2-di-(4-pyridyl)-ethylene (bpe), [Pb2(μ-bpe)3(μ-NO3)2(NO3)2]n (1) and {[Pb(μ-bpe)(μ-NO3)2(NO3)(H2O)]·(Hbpe)·0.5(bpe)}n (2), were synthesized. The compounds 1 and 2 were characterized by IR spectroscopy, elemental analyses and X-ray crystallography. The structures of 1 and 2 may be considered coordination polymers of lead(II) consisting of metallocyclic chains formed by bridging bpe ligands, making two- and one-dimensional array of Pb(NO3)2 and bpe, respectively. Pure phase PbO nano-particles were obtained by thermolyses of compounds 1–2 in oleic acid as surfactant at 180 and 200 °C under air atmosphere. The PbO nanoparticles were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM).