Syntheses, Crystal Structures and Fluorescent Properties of Two Complexes (Zn(II) and Co(II)) Based on 2H-Imidazole-4, 5-dicarbonitrile

Two novel metal-organic complexes {[Zn-2(IMDN)(4) (H2O)3]center dot(H2O)(n) (1) and [Co (IMDN)(2)(H2O)2](n) (2) (HIMDN =2H-imidazole-4,5-dicarbonitrile) based on HIMDN have been synthesized by the method of normal temperature diffusion, and characterized by elemental analysis, FTIR, thermal gravimetric analysis and X-ray diffraction single-crystal structural analysis. The coordination environment of two Zn 010 ions is different in 1. One Zn OD ion is four-coordinated and the other is six-coordinated. The central Co (1) ion is six-coordinated in 2. Both complexes show one dimensional (ID) chain structure and connected by hydrogen bonds to form threedimensional structure. Moreover, the fluorescent property of complex 1 had been investigated in the solid state. CCDC: 889348, 1; 889349, 2.