Hydrothermal Synthesis and Crystal Structure of a New Cd(II) Coordination Polymer With pcu Topological Net

A new Cd(ΙΙ) coordination polymer with 1,4-phenylenediacetic acid (H2PDA) and 1,4-bis(3-pyridylmethy)piperazine (BPMP) has been prepared by hydrothermal synthesis and characterized by single-crystal X-ray diffraction and IR. Complex{[Cd(PDA) (BPMP)]· 4 (H2O)}n (1) is triclinic, space group P–1 with a = 10.443 (5), b = 11.542 (5), c = 13.197 (5) Å, α = 87.510 (5)°, β = 70.648 (5)°, γ = 85.711 (5)°, V = 1496.3 (11) Å3, Z = 2, Mr = 648.99, Dc = 1.432g/cm3, F(000) = 664, and µ = 0.781 mm−1. The final refinement gave R = 0.0571 and wR = 0.0616 for 6184 reflections with I > 2σ(I). X-ray diffraction analysis reveals that the complex 1 displays three-dimensional structure with a pcu topological net.