A mononuclear Cobalt(Ⅱ) complex [CoL(H2O)2]n (H2L: 4,4' ,6,6'-Tetrabromo-2,2'-[ethylenedioxybis (nitrilomethylidyne)]diphenol), has been synthesized and structurally characterized by elemental analysis, IR and X-ray diffraction single crystal structure analysis. The crystal of the complex belongs to monoclinic space group P21/c with a=2.516 8(3) nm, b=1.023 43(18) nm, c=0.789 17(14) nm,β=91.375(2)°, V=2.032 1(5) nm3, Z=4, Dc=indicates that the complex consists of one cobalt(Ⅱ) atom, one L2- unit and two coordinated water molecules, and the coordination number of the cobalt(Ⅱ) atom is six. One-dimensional chain supramolecular structure is formed by intermolecular hydrogen bonds and π-π stacking of neighboring benzene rings. CCDC: 652649.
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