Unusual self-penetrating and polycatenated coordination polymers based on the semi-rigid V-shaped ligand 4-(1-(4-(2H-tetrazol-5-yl)benzyl)-1H-pyrazol-3-yl)pyridine

Self-assembly of d(10) metal salts with a semi-rigid V-shaped N-containing ligand affords two entangled coordination frameworks, namely [Zn-2(bdc)(1.5)(tbpp)] (1) and [Cd(tbpp)(2)(H2O)]center dot H2O (2) (Htbpp = 4-(1-(4-(2H-tetrazol-5-yl)benzyl)-1H-pyrazol-3-yl)pyridine, H(2)bdc = 1,4-benzenedicarboxylate acid). Their structures were determined by single-crystal X-ray diffraction analyses and further characterized by elemental analyses, IR spectra, X-ray powder diffraction and TG analyses. Compound 1 is a (3,6)-connected 3D self-penetrating network with an unprecedented (4.6(2))(4(3).6(7).7(4).8) topology. Compound 2 is the first example of (2D -> 3D) parallel polycatenation of 4(4)-sql net with double edges. Additionally, the photoluminescence properties of compounds 1 and 2 were studied. (C) 2016 Elsevier B.V. All rights reserved.