A New Ni(II) Coordination Polymer Constructed by the Dicarboxylate and Imidazole-Containing Ligand With Three-Fold Interpenetrating pcu Topological Net: Synthesis, Crystal Structure, and Luminescent Property

Abstract

A new Ni(II) coordination polymer with 2,4’-biphenyl-dicar- boxylate acid (H₂bpdc) and 1,4-bis(4-pyridylmethy) piperazine (bpp) has been prepared by hydrothermal synthesis and characterized by single-crystal X-ray diffraction, IR, and EA. Complex [Ni(bpdc)₂(bpp)_1.5(H₂O)]_n(1), is triclinic system space group P–1 with a = 11.975(2) Å, b = 12.449(3) Å, c = 13.154(3) Å, α = 101.971(5)°, β = 111.961(4)°, γ = 91.211(3)°, V = 1768.6(12) ų, Z = 2, M_r = 716.75, D_c = 1.345g/cm³, F(000) = 750, and μ = 0.60 cm^–1. The final refinement gave R = 0.0594 and wR = 0.1587 for 6185 reflections with I > 2σ(I). X-ray diffraction analysis reveals that the title complex [Ni(bpdc)₂(bpp)_1.5(H₂O)]_n(1) displays a three-fold diamond topological net. Furthermore, the luminescent property of complex 1 is investigated.

Keywords:

• coordination polymer
• crystal structure
• nickel (II)

Acknowledgments

The authors thank the support of this work by NSFC (No. 31200642), Special Scientific Research Funds for Central Non-Profit Institutes, Chinese Academy of Fishery Sciences (No.2013A1002), and Qingdao Municipal Science and Technology Plan Project (No.12–1-4-12-(2)-jch).