Two novel Pb(II)-organic frameworks based on polycarboxylate ligands: Syntheses, structures, and luminescent properties

Two novel Pb(II) complexes, {[Pb-1.5(BPIC)]center dot 0.25H(2)O) (1) and {[Pb(ADC) center dot (H2O)])(2), (H3BPTC = biphenyl-3,2' 5'-tricarboxylate, H(2)ADC = 1,3-Adamantanedicarboxylic acid) were successfully synthesized through varying the different polycarboxylate ligands. The compounds were structurally characterized by elemental analysis, IR and single-mystal X-ray diffraction. Compound 1 exhibits a 3D porous coordination framework, which possesses a new 3-nodal (5,6,8)-connected topology. Compound 2 shows a two-dimensional layer containing a 1D nanotube structure. In addition, compounds 1 and 2 exhibit high thermal stability and fluorescent properties in the solid state at room temperature. (C) 2015 Elsevier B.V. All rights reserved.