Synthesis, structure, magnetism and antibacterial properties of a 2-D nickel(II) metal–organic framework based on 3-nitrophthalic acid and 4,4′-bipyridine

<div><p>A 2-D nickel(II) mixed-ligand metal–organic framework [Ni(NPTA)(4,4′-bipy)(H₂O)]_n (<b>1</b>) was synthesized by reaction of 3-nitrophthalic acid (H₂NPTA) and 4,4′-bipyridine (4,4′-bipy) with Ni(II) under hydrothermal condition and characterized by elemental analysis, infrared spectroscopy, and single-crystal X-ray diffraction analysis. Compound <b>1</b> possesses a 2-D layer structure constructed from dinuclear nickel(II) building blocks in which two crystallographically equivalent Ni ions are bridged by two NPTA ligands. Furthermore, the layers are connected into 3-D supramolecular network by hydrogen bonds. The magnetism and antibacterial activity of <b>1</b> were investigated.</p>