PUBLICATION: CHINESE JOURNAL OF STRUCTURAL CHEMISTRY

AUTHORS: Wu, XL; Li, ZJ; Tang, FD; Qian, N; Chu, XX; Liu, W

 

A porous metal-organic framework [C2H20CoF6O2] was synthesized with Co(CH3COO)(2)center dot 4H(2)O and CPHFP (2,2'-bis(4-carboxyphenyl)hexafluoro-propane) under hydrothermal conditions. This FMOF-Co has been characterized by elemental analysis, infrared spectroscopy, thermogravimetric analysis, single-crystal and powder X-ray diffraction. The crystal is of monoclinic space group P2(1)/n with a = 7.8911(2), b = 29.9053(8), c = 10.5811(3) angstrom, beta = 90.193(10)degrees, V = 2499.70(12) angstrom(3), Z = 4, M-r = 557.3, D-c = 1.481 g.cm(-3), F(000) = 1132, mu = 0.768 mm(-1), GOOF = 1.035, the fmal R = 0.0722 and wR = 0.2326 for 6347 observed reflections with I > 2 sigma(I). The structure of FMOF-Co is constructed form the linkage of Co(II) through CPHFP, forming a 3D net framework. The Kr and Xe uptake values are 0.225 and 0.484 mmol. g(-1) at 303 K (100 KPa) with their mol selectivity to be 0.46; while the Kr and Xe uptake values are 0.486 and 0.077 mmol.g(-1) at 233 K (100 KPa), with their mol separation being 6.29 at this condition.

 

LINKS: http://dx.doi.org/10.14102/j.cnki.0254-5861.2011-2776