Pore size-controlled gases and alcohols separation within ultramicroporous homochiral lanthanideorganic frameworksElectronic supplementary information (ESI) available: X-Ray crystallographic files in CIF format for 1, selected bond distances and angles for 1 (Table S1), structure details of 1 (Fig. S1 and S2), in situ temperature-dependent PXRD patterns for 1 (Fig. S3), FTIR spectra (Fig. S4), Langmuir fitting and BET fitting plots (Fig. S5), Langmuir model fitting results (Fig. S6S8), Toth isot

A novel homochiral ultramicroporous lanthanideorganic framework, Ce(BTB)(H 2 O) ( 1 ) (H 3 BTB = 1,3,5-benzenetrisbenzoic acid), with high surface area and two types of open ultramicropores has been synthesized under solvothermal condition, which exhibits an unusual stepwise hysteretic adsorption of O 2 and N 2 at 77 K and high-efficiency gas separations of CO 2 /N 2 and CH 4 /N 2 at 273 K. The ultramicropores of 1 lead to an unprecedented separation of the propanol isomers due to the slight differences of their geometry and dipole moments. Furthermore, the method for calculating the surface-area and gas separation for 1 is summarized. These will provide a general methodology that can be employed to simulate the surface area and gas separation properties of ultramicroporous materials. A novel homochiral lanthanideorganic framework exhibits the ultramicroporous structure and high-efficiency gas and alcohol separations.