title: 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.
authors: School of Engineering, University of Southampton, Southampton SO17 1BJ, United Kingdom.
authors: Carlo
authors: C
authors: Beduz
authors: Marina
authors: M
authors: Carravetta
authors: Judy Y-C
authors: JY
authors: Chen
authors: Maria
authors: M
authors: Concistrè
authors: Mark
authors: M
authors: Denning
authors: Michael
authors: M
authors: Frunzi
authors: Anthony J
authors: AJ
authors: Horsewill
authors: Ole G
authors: OG
authors: Johannessen
authors: Ronald
authors: R
authors: Lawler
authors: Xuegong
authors: X
authors: Lei
authors: Malcolm H
authors: MH
authors: Levitt
authors: Yongjun
authors: Y
authors: Li
authors: Salvatore
authors: S
authors: Mamone
authors: Yasujiro
authors: Y
authors: Murata
authors: Urmas
authors: U
authors: Nagel
authors: Tomoko
authors: T
authors: Nishida
authors: Jacques
authors: J
authors: Ollivier
authors: Stéphane
authors: S
authors: Rols
authors: Toomas
authors: T
authors: Rõõm
authors: Riddhiman
authors: R
authors: Sarkar
authors: Nicholas J
authors: NJ
authors: Turro
authors: Yifeng
authors: Y
authors: Yang
mesh_terms: D037741:Fullerenes / Q000737:chemistry*; D007536:Isomerism; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D008958:Models, Molecular; D011789:Quantum Theory; D012399:Rotation; D013055:Spectrophotometry, Infrared; D014867:Water / Q000737:chemistry*
chemical_list: D037741:Fullerenes; D014867:Water