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Presented here are two d metal-organic coordination polymers (CPs), [Zn(CO)( μ-OH)] ( 1) and [Cd(CO)(OX)(HO)] ( 2) (HOX = oxalic acid) constructed from squaric acid (HCO) tectons. Single-crystal X-ray diffraction studies indicated that both 1 and 2 show 3D structures. The two 3D CPs are assembled from 1D {[Zn( μ-OH)]} chains to 3D structure linked through CO ligands for 1 and 2D {[(Cd1)(CO)]} layers pillared by OX ligands for 2. The structure of compound 1 can be described as a trinodal (3,6,6)-connected net with the point symbol of {4}{4·6·8}{4·6}, whereas 2 possess a trinodal (4,5,6)-connected {4·8} {4·6·8} {4·6} topology. Furthermore, the fluorescent and thermal stabilities properties of these two compounds were investigated. [ABSTRACT FROM AUTHOR]

A new two-dimensional polymeric [Zn(4-pzpt)(btc)(HO)·3HO] ( 1) (4-Hpzpt = 3-(pyridin-4-yl)-5-(pyrazin-2-yl)-1H-1,2,4-triazole, Hbtc = 1,2,3-benzenetricarboxylate), has been synthesized and structurally characterized and features a 3D supramolecular framework with 1D hydrophilic channels formed by the interlayer hydrogen bonds. An unprecedented aqua ligand assisted octameric water cluster consisting of a quasiplanar cyclic hexameric core and two dangling water molecules is captured in 1. The thermal stability and solid state fluorescent property of 1 are discussed. [ABSTRACT FROM AUTHOR]