Formation of Cyclic Water Hexamer in Liquid Helium: The Smallest Piece of Ice
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- 14 January 2000
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 287 (5451) , 293-295
- https://doi.org/10.1126/science.287.5451.293
Abstract
The cyclic water hexamer, a higher energy isomer than the cage structure previously characterized in the gas phase, was formed in liquid helium droplets and studied with infrared spectroscopy. This isomer is formed selectively as a result of unique cluster growth processes in liquid helium. The experimental results indicate that the cyclic hexamer is formed by insertion of water molecules into smaller preformed cyclic complexes and that the rapid quenching provided by the liquid helium inhibits its rearrangement to the more stable cage structure.Keywords
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