Synthesis, Crystal Structure, Characterization of a Pb(II) Mixed-Ligand Tetrazolate Complex
A homometallic mixed-ligand complex Pb(BTA)(phen)·H2O was synthesized by taking hydrated N,N′-bis(1H-tetrazolyl)amine (H2BTA·H2O), 1,10-phenanthroline (phen) and PbCl2 as starting materials during this work. The complex was characterized by elemental analysis, IR, UV-Vis, FS and X-ray single-crystal diffraction. The results reveal that the coordination number of the Pb ion is four and the geometry can be regarded as a square-pyramidal geometry, with two N atoms of BTA2- and two N atoms of phen at the base. Crystal data for it, C14H11N11OPb, monoclinic, space group C2/c, a = 9.420(2) Å, b = 22.943(6) Å, c = 15.286(4) Å, α = 90.000°, β = 105.760(4)°, γ = 90.000°, V = 3179.6(14) Å3, Z = 8, final R indices [I > 2σ(I)], R1 = 0.0241, wR2 = 0.0471. The thermal stability of the complex was investigated by thermogravimetric analysis. The TG profile indicates that Pb(BTA)(phen) is thermally stable up to the temperature of 588.9 K.
Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He
J. G. Tang et al., "Synthesis, Crystal Structure, Characterization of a Pb(II) Mixed-Ligand Tetrazolate Complex", Advanced Materials Research, Vols. 239-242, pp. 2566-2572, 2011