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. C20H20MnN2O5, P2 （1） / c, a=1.0235（2） nm, b=0.89134（19） nm, c=2.0466（4） mm,β=99.820（3）, Z=4 for 1; and C20H20CuN2O5, P2（1）/c, a=1.0002（3）nm, b=0.8949（2）nm, c=2.0270（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 （H2O2 ] （Q = 8-hydroxyquinoline ion）, has been synthesized by general method and structurally characterized by single crystal X-ray diffraction. Crystal data： C18H16CoN2O4, monoclinic, C2/c, α = 1.336 2（4） nm, b = 0.941 2（3） nm, c = 1.354 3（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.
