Authors
Eric D Bloch, Leslie J Murray, Wendy L Queen, Sachin Chavan, Sergey N Maximoff, Julian P Bigi, Rajamani Krishna, Vanessa K Peterson, Fernande Grandjean, Gary J Long, Berend Smit, Silvia Bordiga, Craig M Brown, Jeffrey R Long
Publication date
2011/9/21
Journal
Journal of the American Chemical Society
Volume
133
Issue
37
Pages
14814-14822
Publisher
American Chemical Society
Description
The air-free reaction between FeCl2 and H4dobdc (dobdc4– = 2,5-dioxido-1,4-benzenedicarboxylate) in a mixture of N,N-dimethylformamide (DMF) and methanol affords Fe2(dobdc)·4DMF, a metal–organic framework adopting the MOF-74 (or CPO-27) structure type. The desolvated form of this material displays a Brunauer–Emmett–Teller (BET) surface area of 1360 m2/g and features a hexagonal array of one-dimensional channels lined with coordinatively unsaturated FeII centers. Gas adsorption isotherms at 298 K indicate that Fe2(dobdc) binds O2 preferentially over N2, with an irreversible capacity of 9.3 wt %, corresponding to the adsorption of one O2 molecule per two iron centers. Remarkably, at 211 K, O2 uptake is fully reversible and the capacity increases to 18.2 wt %, corresponding to the adsorption of one O2 molecule per iron center. Mössbauer and infrared spectra are consistent with partial charge …
Total citations
Scholar articles
ED Bloch, LJ Murray, WL Queen, S Chavan… - Journal of the American Chemical Society, 2011