Synthesize and Crystal Structure of a New (3,6)-Connected Cd(II) Coordination Polymer With Flexible Ligand as Template

Abstract

A new Cd(II) coordination polymer with 1,3,5-tricarboxybenzene (H₃BCT) and 1,4-bis(2-methylimidazol-1-yl)butane (bib) has been prepared by hydrothermal synthesis and characterized by single-crystal X-ray diffraction, IR, and EA. The complex, {[Cd(BTC) (H₂O)]·3(H₂O) ·(bib)_0.5}_n (1), is monoclinic space group P2₁/n with a = 10.241 (5), b = 13.769 (5), c = 13.326 (5) (5) Å, β = 90.768 (5)°, V = 1878.9 (13) (13) ų, Z = 4, M_r = 501.74, D_c =1.774g/cm³, F(000) = 1012, and µ = 1.220 mm⁻¹. The final refinement gave R = 0.0234 and wR = 0.0282 for 3,461 reflections with I > 2σ(I). X-ray diffraction analysis reveals that the complex 1 displays a rare (4,6)-connected rtl topological net.

Keywords:

• coordination polymer
• Cd(II)
• crystal structure