Synthesis, Crystal Structure and Photoluminescent Property of Zn(II) Complex Constructed from 1,3-Benzenedicarboxylate and 1,4-Di(1-imidazoly)benzene

A new 2D Zn(II) metal-organic framework, [Zn-2(dib)(1,3-BDC)(2)(H2O)] (1), has been synthesized by the hydrothermal reaction of 1,3-benzenedicarboxylate with ZnSO4 center dot H2O in the presence of 1,4-di(1-imidazoly)benzene (dib=1,4-di(1-imidazoly)benzene, 1,3-H2BDC=1,3-benzenedicarboxylate). The crystal is of monoclinic system, space group P2(1)/n, with a=0.803 67(12) nm, b=1.332 7(2) nm, c=2.372 5(4) nm, beta=97.394(3)degrees, V=2.519 9(7) nm(3), Z=4, F(000)=1 392, R=0.052 0 and wR=0.099 4 (I>2 sigma(I)). The two central zinc(II) ions in the complex locate in a different coordination geometry, one is a distorted tetrahedral and the other is a distorted square-pyramidal coordination geometry, respectively. The dib ligand acts as a bridging ligand, which links the 1D double-chain into 2D layer structure. The net is linked into three-dimensional supramolecular network by O-H center dot center dot center dot O hydrogen bonds. CCDC: 895702.