Two new lead(II) discrete complex and coordination polymer & ultrasound-assisted synthesis of their nanostructures: synthesis, characterization, crystal structure determination, thermal & X-ray powder diffraction studies

Abstract

New lead(II) mononuclear complex [Pb(pyterpy)(NO3)2] (1) and coordination polymer [Pb2(μ-pyterpy)(DMSO)(μ3-Br)(μ2-Br)2(Br)]n (2) (where [pyterpy] is 4′-(3-pyridyl)-2,2′:6′,2′'-terpyridine) and their corresponding nano-structures were synthesized. Complexes 1 and 2 were fully characterized by elemental analysis, IR, NMR, UV–Vis, luminescence spectroscopy as well as single-crystal X-ray diffraction method. The coordination polyhedron for Pb atoms in 1 and 2 can be viewed as hemidirected and holodirected geometries, respectively. The new nanostructures were synthesized using a sonochemical method and characterized by IR spectroscopy, X-ray powder diffraction, and scanning electron microscopy. Moreover, the thermal behavior of complexes 1 and 2 and their nanostructures were studied.