Two new coordination polymers, [M（phen）（e,a-cis-1,4-chdc）（H2O）]n （M=Mn （1）; M=Cu （2）; chdc=cyclohexanedicarboxylic acid; phen=1,10-phenanthroline）, were prepared under hydrothermal conditions and characterized by IR spectra and single crystal X-ray diffraction analysis. X-ray crystal structural analyses reveal that polymer 1 and 2 are isomorphic and belong to the monoclinic system. C 20H 20MnN2O5, P2（1）/c, a=1.023?5（2） nm, b=0.891?34（19） nm, c=2.046?6（4） mm, β=99.820（3）°, Z=4 for 1; and C 20H 20CuN2O5, P2（1）/c, a=1.000?2（3） nm, b=0.894?9（2） nm, c= 2.027?0（5） nm, β=99.694（3）°, Z=4 for 2. In the structures of 1 and 2, the 1,4-chdc ligand only possesses e,a-cis conformation although there are both cis- and trans-conformations in the raw material.
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: C 18 H 16 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.
