Hydrothermal Synthesis, Crystal Structure, and Luminescent Property of A New Trinuclear Mn(II) Coordination Polymer Based on T-Shaped Carboxylate and Imidazole-Containing Ligand

Abstract

A new Mn(II) coordination polymer with biphenyl-3,4’,5-tricarboxylate (H₃bta) and 1,4-bis(imidazol-1-yl)benzene (bib) has been prepared by hydrothermal synthesis and characterized by single-crystal X-ray diffraction, IR, and EA. Compound, [Mn₃(bct)₂(bib)₂]_n, is triclinic, space group P-1 with a = 9.832(3), b = 11.663(4), c = 11.903(5) Å, α = 102.815(5)°, β = 114.045(7)°, γ = 110.092(6)°, V = 1134.6(9)ų, Z = 1, M_r = 1151.71, D_c = 1.686g/cm³, F(000) = 585 and μ = 0.903cm^–1. The final refinement gave R = 0.0369 and wR = 0.0807 for 3916 reflections with I > 2σ(I). X-ray diffraction analysis reveals that the complex displays a two-dimensional layer structure. Furthermore, the luminescent property of complex is investigated which demonstrates that [Mn₃(bct)₂(bib)₂]_n may be a good candidate as a photoactive material.

Keywords:

• coordination polymer
• crystal structure
• Mn(II)

Acknowledgments

The authors thank the support of this work by the Natural Science Foundation of Shandong Province (ZR2011BL024) and the finance support from Dezhou University (318019).