title: Sonochemical synthesis of nano-scale mixed-ligands lead(II) coordination polymers as precursors for preparation of PbO and PbBr(OH) nano-structures; thermal, structural and X-ray powder diffraction studies.
abstract: Nano-structures of two new lead(II) two-dimensional coordination polymers, [Pb(2)(2-pyc)(2)(I)(2)](n) (1) and [Pb(2)(2-pyc)(2)(Br)(2)](n) (2), {2-Hpyc=2-pyridinecarboxilic acid } were synthesized by a sonochemical method that produce the coordination polymers at nano-size. The new nano-structures were characterized by scanning electron microscopy, X-ray powder diffraction, IR spectroscopy and elemental analyses. Compounds 1 and 2 were structurally characterized by single crystal X-ray diffraction and consist of two-dimensional polymeric units. The thermal stability of compounds 1 and 2 were studied by thermal gravimetric and differential thermal analyses. PbO and PbBr(OH) nano-structures were obtained by calcination of the nano-structures of compounds 1 and 2 at 400 degrees C, respectively.
authors.affiliation: Department of Chemistry, Faculty of Sciences, Tarbiat Modares University, P.O. Box 14155-4838, Tehran, Iran.
authors.forename: Homa
authors.initials: H
authors.lastname: Sadeghzadeh
authors.forename: Ali
authors.initials: A
authors.lastname: Morsali
authors.forename: Veysel T
authors.initials: VT
authors.lastname: Yilmaz
authors.forename: Orhan
authors.initials: O
authors.lastname: Büyükgüngör