Three-dimensional porous metal–organic replica of natural mineral α-Al2O3 based on hexadentate triazine derivative

A non-interpenetrated 3D porous metal–organic framework [(CH3)2NH2]2[Cd(TATAT)2/3]·4DMF (1) (TATAT = 5,5′,5″-(1,3,5-triazine-2,4,6-triyl)tris(azanediyl)triisophthalate) has been successfully synthesized under solvothermal conditions and characterized by elemental analysis, TGA, and single-crystal X-ray diffraction analysis. Compound 1 exhibits α-Al2O3 (corundum) topology and represents the first metal–organic analog presently known with a natural material topology based on 6-connected organic ligand and tetrahedral metal ion. In addition, the thermal stabilities of the complex and the acid-treated product have been investigated and the results indicate that acid treatment is an efficient way for this compound to improve its thermal stability.

A non-interpenetrated 3D porous metal–organic framework (1) has been successfully synthesized. 1 exhibits α-Al2O3 (corundum) topology and represents the first metal–organic analog presently known with a natural material topology which is based on octahedral organic ligand and tetrahedral single metal ion.Figure optionsDownload as PowerPoint slideResearch highlights
► A non-interpenetrated 3D porous metal–organic frameworks (1) was synthesized.
► 1 is based on octahedral organic ligand and tetrahedral single metal ion.
► 1 exhibits peculiar α-Al2O3 (corundum) topology.
► Thermal stability of 1 and acid treated product have been determined.
► Acid treatment is a efficient way for 1 having a higher thermal stability.