Synthesis and Structural Characterization of Co（Q）₂（H₂O）₂（Q=8-Hydroxyquinoline Ion）

The single crystal of bi（8-hydroxyquinoline） bihydrated cobalt（Ⅱ） complex, Co（Q）₂（H₂O）₂ （Q=8-hydroxyquinoline ion）, has been synthesized by general method and structurally characterized by single crystal X-ray diffraction. Crystal data: C₁₈ H₁₆ CoN₂O₄, monoclinic, C2/c, a=1.3362（4） nm, b= 0.9412（3） nm, c=1.3543（4） nm, β=109.672（4）°, Z=4. In the complex, Co（Ⅱ） ion is six-coordinated, forming a distorted octahedron. H-bonding and π-π stacking interaction play a significant role to form and stabilize the three-dimensional structure.