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Science 26 August 2005:
Vol. 309. no. 5739, pp. 1350 - 1354
DOI: 10.1126/science.1113247
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Reports

Gas Adsorption Sites in a Large-Pore Metal-Organic Framework

Jesse L. C. Rowsell,1 Elinor C. Spencer,2 Juergen Eckert,3,4 Judith A. K. Howard,2 Omar M. Yaghi1*

The primary adsorption sites for Ar and N2 within metal-organic framework-5, a cubic structure composed of Zn4O(CO2)6 units and phenylene links defining large pores 12 and 15 angstroms in diameter, have been identified by single-crystal x-ray diffraction. Refinement of data collected between 293 and 30 kelvin revealed a total of eight symmetry-independent adsorption sites. Five of these are sites on the zinc oxide unit and the organic link; the remaining three sites form a second layer in the pores. The structural integrity and high symmetry of the framework are retained throughout, with negligible changes resulting from gas adsorption.

1 Materials Design and Discovery Group, Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, MI 48109, USA.
2 Department of Chemistry, University of Durham, South Road, Durham DH1 3LE, UK.
3 Materials Research Laboratory, University of California, Santa Barbara, CA 93106, USA.
4 Los Alamos Neutron Science Center–12, Mail Stop H805, Los Alamos National Laboratory, Los Alamos, NM 87545, USA.

* To whom correspondence should be addressed. E-mail: oyaghi{at}umich.edu

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
From the Cover: Li-decorated metal organic framework 5: A route to achieving a suitable hydrogen storage medium.
A. Blomqvist, C. M. Araujo, P. Srepusharawoot, and R. Ahuja (2007)
PNAS 104, 20173-20176
   Abstract »    Full Text »    PDF »


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Science. ISSN 0036-8075 (print), 1095-9203 (online)