| Abstract: Two metal-organic frameworks, [Cd(bib)2(NO3)2] (1) and [Cd(bib)Br2] (2) were synthesized by reactions of ligand 1-bromo-3,5-bis(imidazol-1-ylmethyl)benzene (bib) with corresponding cadmium(Ⅱ) salts, respectively. Their crystal structures were determined by X-ray crystal structure analyses. The results showed that 1 crystallizes in triclinic, space group P1 with a=0.836 18(14) nm, b=0.887 62(15) nm, c=1.165 9(2) nm, α=84.211(3)°, β=74.321(3)°, γ=69.805(3)°, V=0.781 9(2) nm3, Z=1, Dc=1.849 g·cm-3, F(000)=430, μ=3.314 cm-1, R=0.032 7, wR=0.085 0; while complex 2 crystallizes in monoclinic, space group P21/c with a=0.741 86(9) nm, b=1.423 77(18) nm, c=1.596 0(2) nm, β=94.729(2)°, V=1.680 0(4) nm3, Z=4, Dc=2.330 g·cm-3, F(000)=1 112, μ=8.435 cm-1, R=0.030 1, wR=0.066 7. Complex 1 has a 1D chain structure, which is further connected by Br…π interactions to generate a 2D network. In the case of complex 2, 2D sheet structure was further linked by Br…Br interactions leading to the formation of a 3D framework. CCDC: 715302, 1; 715303, 2. |
