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Komatsu K, Hattori T, Klotz S, Machida S, Yamashita K, Ito H, Kobayashi H, Irifune T, Shinmei T, Sano-Furukawa A, Kagi H. Hydrogen bond symmetrisation in D 2O ice observed by neutron diffraction. Nat Commun 2024; 15:5100. [PMID: 38937434 PMCID: PMC11211428 DOI: 10.1038/s41467-024-48932-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 05/17/2024] [Indexed: 06/29/2024] Open
Abstract
Hydrogen bond symmetrisation is the phenomenon where a hydrogen atom is located at the centre of a hydrogen bond. Theoretical studies predict that hydrogen bonds in ice VII eventually undergo symmetrisation upon increasing pressure, involving nuclear quantum effect with significant isotope effect and drastic changes in the elastic properties through several intermediate states with varying hydrogen distribution. Despite numerous experimental studies conducted, the location of hydrogen and hence the transition pressures reported up to date remain inconsistent. Here we report the atomic distribution of deuterium in D2O ice using neutron diffraction above 100 GPa and observe the transition from a bimodal to a unimodal distribution of deuterium at around 80 GPa. At the transition pressure, a significant narrowing of the peak widths of 110 is also observed, attributed to the structural relaxation by the change of elastic properties.
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Affiliation(s)
- Kazuki Komatsu
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
| | - Takanori Hattori
- J-PARC Center, Japan Atomic Energy Agency, 2-4 Shirakata, Tokai, Naka, Ibaraki, 319-1195, Japan
| | - Stefan Klotz
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, CNRS UMR 7590, Sorbonne Université, F-75252, Paris, France.
| | - Shinichi Machida
- Neutron Science and Technology Center, CROSS, 162-1 Shirakata, Tokai, Naka, Ibaraki, 319-1106, Japan
| | - Keishiro Yamashita
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
- Institute of Physical Chemistry, University of Innsbruck, A-6020, Innsbruck, Austria
| | - Hayate Ito
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Hiroki Kobayashi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Tetsuo Irifune
- Geodynamics Research Center, Ehime University, 2-5 Bunkyo-cho, Matsuyama, Ehime, 790-8577, Japan
| | - Toru Shinmei
- Geodynamics Research Center, Ehime University, 2-5 Bunkyo-cho, Matsuyama, Ehime, 790-8577, Japan
| | - Asami Sano-Furukawa
- J-PARC Center, Japan Atomic Energy Agency, 2-4 Shirakata, Tokai, Naka, Ibaraki, 319-1195, Japan
| | - Hiroyuki Kagi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
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Komatsu K. Neutrons meet ice polymorphs. CRYSTALLOGR REV 2022. [DOI: 10.1080/0889311x.2022.2127148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2022]
Affiliation(s)
- Kazuki Komatsu
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Tokyo, Japan
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Fukui H, Kadobayashi H, Abe H, Takahashi R, Wadati H, Hirao N. Equation of states for dense ice up to 80 GPa at low-temperature conditions. J Chem Phys 2022; 156:064504. [DOI: 10.1063/5.0084278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Hiroshi Fukui
- Graduate School of Science, University of Hyogo, Kouto 3-2-1, Kamigori, Hyogo 678-1297, Japan
| | | | - Hirotaka Abe
- Graduate School of Science, University of Hyogo, Kouto 3-2-1, Kamigori, Hyogo 678-1297, Japan
| | - Ryunosuke Takahashi
- Graduate School of Science, University of Hyogo, Kouto 3-2-1, Kamigori, Hyogo 678-1297, Japan
| | - Hiroki Wadati
- Graduate School of Science, University of Hyogo, Kouto 3-2-1, Kamigori, Hyogo 678-1297, Japan
- Institute of Laser Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Naohisa Hirao
- Japan Synchrotron Radiation Research Institute, Kouto 1-1-1, Sayo, Hyogo 679-5198, Japan
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Ikeda T. First principles centroid molecular dynamics simulation of high pressure ices. J Chem Phys 2018; 148:102332. [DOI: 10.1063/1.5003055] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Takashi Ikeda
- Synchrotron Radiation Research Center, Quantum Beam Science Research Directorate (QuBS), National Institutes for Quantum and Radiological Science and Technology (QST), 1-1-1 Kouto, Sayo, Hyogo 679-5148, Japan
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