Two New Coordination Polymers: M（phen）（e,a-cis-1,4-chdc）（H₂O）_n（M=Mn and Cu; phen=1,10-phenanthroline; chdc=cyclohexanedicarboxylate）

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.