Synthesis and Crystal Structure of a Zeolite-like Metal-organic Framework Based on the Triazole Ligand

A novel zeolite-like metal-organic framework, [Cd-12(trz)(12)center dot F-10 center dot(SiF6)(3)].(H3O)(4) (Htrz = 1,2,4-triazole), has been synthesized under solvothermal conditions using 1H-1,2,4-triazole-3-carboxylic acid and CdF2 as the starting materials. The complex has been characterized by elemental analysis, IR, SEM-EDS, gas adsorption, powder and single-crystal X-ray diffiaction analyses. The title complex crystallizes in the cubic I-43m space group, with a = 14.6436(8), V = 3140.1(3) angstrom(3), Z = 2, M-r = 2857.96, D-c = 3.023 g/cm(3) and F(000) = 2668. The final R = 0.0653 and wR = 0.1880 for 586 observed reflections with I> 2 sigma(I). In the title complex, three adjacent Cd(II) centers are connected by three mu(3)-bridging triazole ligands to form triagonal secondary building units (SBUs), which are further interconnected to fouli a three-dimensional skeleton with tetrahedral cages.