Holodirected coordination sphere around lead(II) in three-dimensional polymeric structure; New precursor for preparation of lead oxide sulfate nano-structures

摘要

A new lead(II) three-dimensional coordination polymer, [Pb_2(μ_3-ANS)_2(μ_2-Cl)_2(H_2O)_2]n (1) [ANS~- = 4-amino-1-naphthalenesulfonate], has been synthesized and characterized. The single-crystal X-ray data of compound 1 shows only one type of PbII ion with coordination number of six, the lead atom has distorted octahedral coordination sphere containing stereo-chemically inactive electron lone pair. The thermal stability of 1 was studied by TG-DTA (Thermo gravimetric and differential thermal analyses). Regular morphology of Pb_2(SO_4)O nano-particle was prepared from fine powders of compound 1 by calcination process at 700 °C. This nano-structure was characterized by XRD (X-ray powder diffraction) and SEM (Scanning electron microscopy).