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Nature 442, 878-879 (24 August 2006) | doi:10.1038/442878a; Published online 23 August 2006

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Solid-state-chemistry: Framework for a molecular prison

Michel Pouchard1

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A remarkable family of solids exists in which host compounds hold guest molecules captive in their rooms. The latest example has an unprecedented topology and opens up fresh avenues for investigation.

Small molecules can be trapped, like hostages in a prison cell, by networks of cages formed from another compound. The resulting solids — known as clathrates, or inclusion compounds — have been known about for more than 150 years, but have recently gained media attention for their potential to trap the greenhouse gas carbon dioxide.

  1. Michel Pouchard is at the Bordeaux Institute of Condensed Matter Chemistry (ICMCB-CNRS), Pessac F-33608, France.
    Email: pouchard@icmcb-bordeaux.cnrs.fr

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