Synthesis, Characterization, and Crystal Structure of Two Coordination Polymer Material with Rigid Tetracarboxylate and Chelating N-Donor Coligand

Two new metal-organic frameworks, [Mn(aobtc))0.5 (phen)2·2H2O·H2hb] (1) and [Cu(phen)2Cl·H3DDA·H2O·HAC] (2) (H4aobtc = azoxybenzene-3,3′,4,4′-tetracarboxylic acid, H4DDA = 4,4′-diazenediyldiphthalic acid, H2hb = p-hydroxybenzoic acid and phen = 1,10-phenanthroline), have been synthesized and characterized by IR and single-crystal X-ray diffraction. Complex 1 exhibits interesting 1D chain structure containing dinuclear Mn subunits, which is further extended into 3D supramolecular double chain via π–π interactions and hydrogen-bonding interactions. Compound 2 has a monomer with [Mn(phen)2Cl]+ unit. The structural analysis reveals that the assistant ligand has critical effect on the construction of the complexes.