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Gas adsorption sites in a large-pore metal-organic framework.

Rowsell, J. L. C. and Spencer, E. C. and Eckert, J. and Howard, J. A. K. and Yaghi, O. M. (2005) 'Gas adsorption sites in a large-pore metal-organic framework.', Science., 309 (5739). pp. 1350-1354.


The primary adsorption sites for Ar and N-2 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.

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Record Created:03 May 2007
Last Modified:08 Apr 2009 16:30

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