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Title: Quantum Dynamics of H 2 Trapped within Organic Clathrate Cages

Journal Article · · Physical Review Letters
 [1];  [2];  [2];  [1];  [3];  [3];  [2]
  1. Carnegie Inst. of Washington, Washington, DC (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)

The rotational and translational dynamics of molecular hydrogen trapped within β-hydroquinone clathrate (H2@β-HQ)—a practical example of a quantum particle trapped within an anisotropic confining potential—were investigated using inelastic neutron scattering and Raman spectroscopy. High-resolution vibrational spectra, including those collected from the VISION spectrometer at Oak Ridge National Laboratory, indicate relatively strong attractive interaction between guest and host with a strikingly large splitting of rotational energy levels compared with similar guest-host systems. Unlike related molecular systems in which confined H2 exhibits nearly free rotation, the behavior of H2@β-HQ is explained using a two-dimensional (2D) hindered rotor model with barrier height more than 2 times the rotational constant (-16.2 meV).

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Energy Frontier Research Centers (EFRC) (United States). Energy Frontier Research in Extreme Environments (EFree)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725; SC0001057; AC0500OR22725
OSTI ID:
1486932
Alternate ID(s):
OSTI ID: 1429132
Journal Information:
Physical Review Letters, Vol. 120, Issue 12; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 5 works
Citation information provided by
Web of Science

References (32)

Observation of Rotational Transitions for H 2 , D 2 , and HD Adsorbed on Cu(100) journal February 1982
A high rotational barrier for physisorbed hydrogen in an fcu-metal–organic framework journal January 2014
The Disk Chopper Spectrometer at NIST: a new instrument for quasielastic neutron scattering studies journal August 2003
5D quantum dynamics of the H 2 @SWNT system: Quantitative study of the rotational-translational coupling journal February 2015
Mantid—Data analysis and visualization package for neutron scattering and μ SR experiments
  • Arnold, O.; Bilheux, J. C.; Borreguero, J. M.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 764 https://doi.org/10.1016/j.nima.2014.07.029
journal November 2014
DAVE: A Comprehensive Software Suite for the Reduction, Visualization, and Analysis of Low Energy Neutron Spectroscopic Data
  • Azuah, Richard Tumanjong; Kneller, Larry R.; Qiu, Yiming
  • Journal of Research of the National Institute of Standards and Technology, Vol. 114, Issue 6 https://doi.org/10.6028/jres.114.025
journal November 2009
Raman spectroscopic studies of hydrogen clathrate hydrates journal January 2009
Vibrational Spectroscopy with Neutrons book June 2005
Neutron Scattering Measurements and Computation of the Quantum Dynamics of Hydrogen Molecules Trapped in the Small and Large Cages of Clathrate Hydrates journal April 2013
Resolution of VISION, a crystal-analyzer spectrometer
  • Seeger, Philip A.; Daemen, Luke L.; Larese, John Z.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 604, Issue 3 https://doi.org/10.1016/j.nima.2009.03.204
journal June 2009
15. The structure of molecular compounds. Part IV. Clathrate compounds journal January 1948
Quantum dynamics of interstitial H 2 in solid C 60 journal September 1999
Statistical Mechanics of Multimolecular Adsorption. IV. The Statistical Analog of the BET Constant a 1 b 2 / b 1 a 2 . Hindered Rotation of a Symmetrical Diatomic Molecule Near a Surface journal March 1948
Triple Guest Occupancy and Negative Compressibility in Hydrogen-Loaded β-Hydroquinone Clathrate journal May 2014
Static and dynamic properties of hydrogen sulphide in hydroquinone clathrates journal April 1988
Low temperature Raman spectra of hydrogen in simple and binary clathrate hydrates journal August 2008
Theory of Ortho‐Para Hydrogen Separation by Adsorption at Low Temperatures, Isotope Separation journal January 1960
Quantum Translator-Rotator: Inelastic Neutron Scattering of Dihydrogen Molecules Trapped inside Anisotropic Fullerene Cages journal January 2009
Chemical−Clathrate Hybrid Hydrogen Storage: Storage in Both Guest and Host journal November 2008
Hydrogen adsorption in the metal–organic frameworks Fe2(dobdc) and Fe2(O2)(dobdc) journal January 2012
H2, HD, and D2 inside C60: Coupled translation-rotation eigenstates of the endohedral molecules from quantum five-dimensional calculations journal August 2008
Quantum dynamics of H2, D2, and HD in the small dodecahedral cage of clathrate hydrate: Evaluating H2-water nanocage interaction potentials by comparison of theory with inelastic neutron scattering experiments journal June 2008
Inelastic Neutron Scattering and Separation Coefficient of Absorbed Hydrogen: Molecular Alignment and Energy Levels journal November 1976
Inelastic neutron scattering of a quantum translator-rotator encapsulated in a closed fullerene cage: Isotope effects and translation-rotation coupling in H 2 @ C 60 and HD @ C 60 journal August 2010
Quantum rattling of molecular hydrogen in clathrate hydrate nanocavities journal October 2007
118. The structure of molecular compounds. Part V. The clathrate compound of quinol and methanol journal January 1948
Hydrogen adsorbed in a metal organic framework-5: Coupled translation-rotation eigenstates from quantum five-dimensional calculations journal July 2012
Hydrogen adsorption in HKUST-1: a combined inelastic neutron scattering and first-principles study journal April 2009
Two-Dimensional Quantum Rotation of Adsorbed H 2 journal July 1999
Recent and future developments on TOSCA at ISIS journal November 2014
Theory and spectroscopy of an incarcerated quantum rotor: The infrared spectroscopy, inelastic neutron scattering and nuclear magnetic resonance of H2@C60 at cryogenic temperature journal April 2011
Inelastic neutron scattering study of hydrogen in d8-THF∕D2O ice clathrate journal October 2007

Cited By (1)

Assignment of Terahertz Modes in Hydroquinone Clathrates journal January 2020

Figures / Tables (4)


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