A mesoporous lanthanide-organic framework constructed from a dendritic hexacarboxylate with cages of 2.4 nm

Solvothermal reaction of a dendritic hexacarboxylic acid with Tb(NO3)(3)center dot 6H(2)O afforded a mesoporous lanthanide-organic framework (UTSA-61) whose single-crystal X-ray structure was characterized to have octahedral cages of 2.4 nm in diameter. This mesoporous MOF not only exhibits novel hey topology, but also maintains permanent porosity as shown in its N-2, H-2, CO2 and CH4 gas sorption isotherms.