Abstract
AbstractFour ZnII/CdII coordination polymers (CPs) based on 2‐(4‐carboxy‐phenyl)imidazo[4, 5‐f]‐1, 10‐phenanthroline (HNCP) and different derivatives of 5‐R‐1, 3‐benzenedicarboxylate (5‐R‐1, 3‐BDC) (R = NO2, H, OH), [Zn(HNCP)(5‐NO2‐1, 3‐BDC)]n (1), [Cd(HNCP)(5‐NO2‐1, 3‐BDC)]n (2), [Zn(HNCP)(1, 3‐BDC)(H2O)2]n (3), and {[Zn(HNCP)(5‐OH‐1, 3‐BDC)(H2O)·H2O}n (4) were synthesized under hydrothermal conditions. Compounds 1–4 were determined by elemental analyses, IR spectroscopy, and single‐crystal and powder X‐ray diffraction. Compounds 1 and 2 are isomorphous, presenting a 4‐connected uninodal (4, 4)‐sql 2D framework with threefold interpenetration, which are further extended into the three‐dimensional (3D) supramolecular architecture through π···π stacking interactions between the aryl rings of 5‐NO2‐1, 3‐BDC. Compared to compound 1, 3 is obtained by using different reaction temperatures and metal‐ligand ratios, generating a 3D framework with –ABAB– fashion via π···π stacking interactions. Compound 4 is a 1D chain, which is further extended into a 3D supramolecular net by hydrogen bonds and π···π stacking interactions. The thermogravimetric and fluorescence properties of 1–4 were also explored.
Published Version
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