Crystal Structure and Luminescent Properties of a Zn(Ⅱ) Coordination Polymer Assembled by Mixed-ligand

A Zn(Ⅱ) coordination polymer [Zn(NIP)(3,3'-bpt)]·H2O(1, NIP = 5-nitroisophthalate, 3,3'-bpt = 1H-3,5-bis(3-pyridyl)-1,2,4-triazolate) has been synthesized by the hydrothermal reaction at 140 ℃ and structurally characterized by IR spectroscopy, X-ray diffraction, thermal analysis, single-crystal X-ray diffraction and luminescent properties. In complex 1, the zinc atom is five-coordinated with three carboxylate oxygen atoms from three H2 NIP and two nitrogen atoms from two 3,3'-bpt, respectively, forming a distorted trigonal bipyramidal geometry and showing a 1D chain structure, which is further bridged by NIP to form a 3D supramolecular network via self-assembly of hydrogen bonds.