Ice XVI
Ice XVI is a crystalline form of ice that is topologically equivalent to the empty structure of sII Clathrate hydrates. It has been formed for the first time in 2014 by a removal of gas molecules form Ne clathrate under vacuum at temeratures below 147K[1]. The resulting empty water frame, ice XVI, is thermodynamically not stable at positive pressure but still can be preserved at cryogenic temperatures. Above 145-147K ice XVI transforms into the stacking-faulty Ice Ic and later ordinary Ice Ih .
See also
- Ice for other crystalline form of ice
References
- ^ Andrzej Falenty, Thomas C. Hansen & Werner F. Kuhs, Formation and properties of ice XVI obtained by emptying a type sII clathrate hydrate, Nature 516, 231–233 (11 December 2014)
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