DYNAMICS OF TRIMETHYLENE OXIDE IN A STRUCTURE II CLATHRATE HYDRATE
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dc.contributor.author | Jones C.Y. | |
dc.contributor.author | Peral I. | |
dc.date.accessioned | 2022-04-11T05:21:40Z | |
dc.date.available | 2022-04-11T05:21:40Z | |
dc.date.issued | 2004 | |
dc.identifier | https://www.elibrary.ru/item.asp?id=14330650 | |
dc.identifier.citation | American Mineralogist, 2004, 89, 8-9, 1176-1182 | |
dc.identifier.issn | 0003-004X | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/37056 | |
dc.description.abstract | Neutron scattering has been used to study the dynamics of trimethylene oxide (TMO) in a structure II clathrate hydrate. Two regimes of guest dynamics have been identified in the range 10 K to 100 K. Below 50 K, the hydrogen atoms on TMO execute jumps between nonequivalent sites with a jump distance of 2.1 Å, consistent with a model of rotations of 90° about the C2v molecular axis between sites with unequal occupancy probabilities, and corresponding to an energy difference between sites of ~7 meV. Above 50 K, a second dynamical regime appears in which rotational motions of H occur about both the C2v axis and a second axis perpendicular to the plane of the molecule. An increase in the activation energy barrier to the motion that appears to accompany the onset of multi-axis motion could be a result of the additional high-energy rotations taking place within more restricted crosssections of the cage. | |
dc.title | DYNAMICS OF TRIMETHYLENE OXIDE IN A STRUCTURE II CLATHRATE HYDRATE | |
dc.type | Статья |
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