Abstract
Based on the 6-(3-pyridyl)isophthalic acid (H2pip) ligand, three new complexes [Mn(Hpip)2(bipy)2(H2O)2] (1), {[Mn(pip)(bibp)]·DMA}n (2) and [Mn(pip)]n (3), have been obtained under hydrothermal conditions and characterized by single-crystal X-ray diffraction. Compound 1 reveals a 0D mononuclear structure, and isolated molecules are further linked by hydrogen-bonds into a 3D supramolecular structure. In 2, the binuclear Mn2(COO)4N4 secondary building units (SBUs) are linked by neighboring ligands to result in a 2D layer structure. Inside of the structure of 3, one-dimensional (1D) chains are formed by the coordination of carboxylate groups and Mn2+, which are further connected by the ligands generating a 3D network. Notably, complex 2 and 3 reveal high thermal and aqueous stability, suggested by TGA and PXRD data. Moreover, the magnetic measurements indicate polymers 2 and 3 are both exhibit antiferromagnetic behavior.
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