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Quantum rotation of ortho and para-water encapsulated in a fullerene cage.

ABSTRACT: Inelastic neutron scattering, far-infrared spectroscopy, and cryogenic nuclear magnetic resonance are used to investigate the quantized rotation and ortho-para conversion of single water molecules trapped inside closed fullerene cages. The existence of metastable ortho-water molecules is demonstrated, and the interconversion of ortho-and para-water spin isomers is tracked in real time. Our investigation reveals that the ground state of encapsulated ortho water has a lifted degeneracy, associated with symmetry-breaking of the water environment.

SUBMITTER: Beduz C

PROVIDER: S-EPMC3420201 | biostudies-literature | 2012 Aug

REPOSITORIES: biostudies-literature

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Quantum rotation of ortho and para-water encapsulated in a fullerene cage.

Beduz Carlo C Carravetta Marina M Chen Judy Y-C JY Concistrè Maria M Denning Mark M Frunzi Michael M Horsewill Anthony J AJ Johannessen Ole G OG Lawler Ronald R Lei Xuegong X Levitt Malcolm H MH Li Yongjun Y Mamone Salvatore S Murata Yasujiro Y Nagel Urmas U Nishida Tomoko T Ollivier Jacques J Rols Stéphane S Rõõm Toomas T Sarkar Riddhiman R Turro Nicholas J NJ Yang Yifeng Y

Proceedings of the National Academy of Sciences of the United States of America 20120725 32

Inelastic neutron scattering, far-infrared spectroscopy, and cryogenic nuclear magnetic resonance are used to investigate the quantized rotation and ortho-para conversion of single water molecules trapped inside closed fullerene cages. The existence of metastable ortho-water molecules is demonstrated, and the interconversion of ortho-and para-water spin isomers is tracked in real time. Our investigation reveals that the ground state of encapsulated ortho water has a lifted degeneracy, associated ...[more]

PMID: 22837402

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Project description:This SuperSeries is composed of the SubSeries listed below.

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