Substituent effect of R-isophthalates (R = –H, –CH3, –OCH3, –tBu, –OH, and –NO2) on the construction of CdIIcoordination polymers incorporating a dipyridyl tecton 2,5-bis(3-pyridyl)-1,3,4-oxadiazoleElectronic supplementary information (ESI) available: Simulated and calculated powder X-ray diffraction (PXRD) patterns (Fig. S1), thermogravimetric analysis (TGA) curves (Fig. S2), selected bond lengths and angles (Table S1), and important H-bonding geometries (Table S2). CCDC reference numbers 790241–790246. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c0ce00555j

A series of CdIIcoordination polymers have been designed and hydrothermally synthesized by using a bent dipyridyl tecton 2,5-bis(3-pyridyl)-1,3,4-oxadiazole (3-bpo) and R-isophthalic acids (H2ip-R; R = –H, –CH3, –OCH3, –tBu, –OH, and –NO2), which exhibit diverse 1D and 2D polymeric coordination networks. The results demonstrate that the substituent effect of R-isophthalates does play a decisive role in directing the structural assemblies of this system, in which secondary interactions such as H-bonding and ππ stacking are generally observed to extend the coordination motifs. Notably, the 3-bpo building block shows adaptable conformations (cisoid-I, cisoid-II, and transoid) to facilitate the structural diversity of these complexes. Solid state properties such as thermal stability and fluorescence for these crystalline materials will also be presented. [ABSTRACT FROM AUTHOR]