Two new hemidirected lead(II) complexes: [Pb(pcih)(bha)] and [Pb(pcih)(NO_3)]

摘要

Two new lead(II) complexes [Pb(pcih)(bha)] (1) and [Pb(pcih)(NO _3)] (2, Hpcih =,4-bis(3-pyridyl)- 2,3-diazo-1,3-butadiene, Hbha = 2-hydroxybenzoic acid) have been synthesized by solvothermal methods and structurally characterized. The single-crystal X-ray data show that the coordination spheres of the Pb~(2+) ions in 1 and 2 are hemidirected with stereochemically active electron lone pairs. There are some significant secondary Pb ? N and Pb ? O interactions which produce two different extended structures, namely a 1D chain in 1 and a 2D layer in 2. Both 1 and 2 exhibit fluorescence properties at room temperature.