Paper: Metal Insertion in a Microporous Metal−Organic Framework Lined with 2,2′-Bipyridine

Authors: E. D. Bloch, D. Britt, C. Lee, C. J. Doonan, F. J. Uribe-Romo, H. Furukawa, J. R. Long, and O. M. Yaghi

Citation: J. Am. Chem. Soc., 2010, 132, 14382-14384

DOI: 10.1021/ja106935d

Abstract: Reaction of AlCl3·6H2O with 2,2′-bipyridine-5,5′-dicarboxylic acid (H2bpydc) affords Al(OH)(bpydc) (1, MOF-253), the first metal−organic framework with open 2,2′-bipyridine (bpy) coordination sites. The material displays a BET surface area of 2160 m2/g and readily complexes metals to afford, for example, 1·xPdCl2 (x = 0.08, 0.83) and 1·0.97Cu(BF4)2. EXAFS spectroscopy performed on 1·0.83PdCl2 reveals the expected square planar coordination geometry, matching the structure of the model complex (bpy)PdCl2. Significantly, the selectivity factor for binding CO2 over N2 under typical flue gas conditions is observed to increase from 2.8 in 1 to 12 in 1·0.97Cu(BF4)2