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Zhang H, Datchi F, Andriambariarijaona L, Rescigno M, Bove LE, Klotz S, Ninet S. Observation of a Plastic Crystal in Water-Ammonia Mixtures under High Pressure and Temperature. J Phys Chem Lett 2023; 14:2301-2307. [PMID: 36847363 DOI: 10.1021/acs.jpclett.3c00092] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Solid mixtures of ammonia and water, the so-called ammonia hydrates, are thought to be major components of solar and extra-solar icy planets. We present here a thorough characterization of the recently reported high pressure (P)-temperature (T) phase VII of ammonia monohydrate (AMH) using Raman spectroscopy, X-ray diffraction, and quasi-elastic neutron scattering (QENS) experiments in the ranges 4-10 GPa, 450-600 K. Our results show that AMH-VII exhibits common structural features with the disordered ionico-molecular alloy (DIMA) phase, stable above 7.5 GPa at 300 K: both present a substitutional disorder of water and ammonia over the sites of a body-centered cubic lattice and are partially ionic. The two phases however markedly differ in their hydrogen dynamics, and QENS measurements show that AMH-VII is characterized by free molecular rotations around the lattice positions which are quenched in the DIMA phase. AMH-VII is thus a peculiar crystalline solid in that it combines three types of disorder: substitutional, compositional, and rotational.
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Affiliation(s)
- H Zhang
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), Sorbonne Université, CNRS UMR 7590, MNHN, 4, place Jussieu, Paris 75005, France
- Shandong Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Technology, Liaocheng University, Liaocheng 252059, China
| | - F Datchi
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), Sorbonne Université, CNRS UMR 7590, MNHN, 4, place Jussieu, Paris 75005, France
| | - L Andriambariarijaona
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), Sorbonne Université, CNRS UMR 7590, MNHN, 4, place Jussieu, Paris 75005, France
| | - M Rescigno
- Dipartimento di Fisica, Universita di Roma La Sapienza, Piazzale Aldo Moro 5, 00185 Roma, Italy
| | - L E Bove
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), Sorbonne Université, CNRS UMR 7590, MNHN, 4, place Jussieu, Paris 75005, France
- Dipartimento di Fisica, Universita di Roma La Sapienza, Piazzale Aldo Moro 5, 00185 Roma, Italy
- LQM, Institute of Physics, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - S Klotz
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), Sorbonne Université, CNRS UMR 7590, MNHN, 4, place Jussieu, Paris 75005, France
| | - S Ninet
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), Sorbonne Université, CNRS UMR 7590, MNHN, 4, place Jussieu, Paris 75005, France
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2
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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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3
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Atomic distribution and local structure in-situ VII from in situ neutron diffraction. Proc Natl Acad Sci U S A 2022; 119:e2208717119. [PMID: 36161890 DOI: 10.1073/pnas.2208717119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Ice polymorphs show extraordinary structural diversity depending on pressure and temperature. The behavior of hydrogen-bond disorder not only is a key ingredient for their structural diversity but also controls their physical properties. However, it has been a challenge to determine the details of the disordered structure in ice polymorphs under pressure, because of the limited observable reciprocal space and inaccuracies related to high-pressure techniques. Here, we present an elucidation of the disordered structure of ice VII, the dominant high-pressure form of water, at 2.2 GPa and 298 K, from both single-crystal and powder neutron-diffraction techniques. We reveal the three-dimensional atomic distributions from the maximum entropy method and unexpectedly find a ring-like distribution of hydrogen in contrast to the commonly accepted discrete sites. In addition, total scattering analysis at 274 K clarified the difference in the intermolecular structure from ice VIII, the ordered counterpart of ice VII, despite an identical molecular geometry. Our complementary structure analyses robustly demonstrate the unique disordered structure of ice VII. Furthermore, these findings are related to proton dynamics, which drastically vary with pressure, and will contribute to an understanding of the structural origin of anomalous physical properties of ice VII under pressures.
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4
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Kim M, Oka K, Ahmed S, Somayazulu MS, Meng Y, Yoo CS. Evidence for superionic H 2O and diffusive He-H 2O at high temperature and high pressure. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 34:394001. [PMID: 35835085 DOI: 10.1088/1361-648x/ac8134] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
We present the evidence of superionic phase formed in H2O and, for the first time, diffusive H2O-He phase, based on time-resolved x-ray diffraction experiments performed on ramp-laser-heated samples in diamond anvil cells. The diffraction results signify a similar bcc-like structure of superionic H2O and diffusive He-H2O, while following different transition dynamics. Based on time and temperature evolution of the lattice parameter, the superionic H2O phase forms gradually in pure H2O over the temperature range of 1350-1400 K at 23 GPa, but the diffusive He-H2O phase forms abruptly at 1300 K at 26 GPa. We suggest that the faster dynamics and lower transition temperature in He-H2O are due to a larger diffusion coefficient of interstitial-filled He than that of more strongly bound H atoms. This conjecture is then consistent with He disordered diffusive phase predicted at lower temperatures, rather than H-disordered superionic phase in He-H2O.
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Affiliation(s)
- Minseob Kim
- Institute for Shock Physics and Department of Chemistry, Washington State University, Pullman, WA 99164, United States of America
| | - Kenta Oka
- Institute for Shock Physics and Department of Chemistry, Washington State University, Pullman, WA 99164, United States of America
| | - Sohan Ahmed
- Institute for Shock Physics and Department of Chemistry, Washington State University, Pullman, WA 99164, United States of America
| | - Maddury S Somayazulu
- High Pressure Collaborative Access Team at Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, United States of America
| | - Yue Meng
- High Pressure Collaborative Access Team at Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, United States of America
| | - Choong-Shik Yoo
- Institute for Shock Physics and Department of Chemistry, Washington State University, Pullman, WA 99164, United States of America
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5
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Structural independence of hydrogen-bond symmetrisation dynamics at extreme pressure conditions. Nat Commun 2022; 13:3042. [PMID: 35650203 PMCID: PMC9160052 DOI: 10.1038/s41467-022-30662-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 05/05/2022] [Indexed: 11/29/2022] Open
Abstract
The experimental study of hydrogen-bonds and their symmetrization under extreme conditions is predominantly driven by diffraction methods, despite challenges of localising or probing the hydrogen subsystems directly. Until recently, H-bond symmetrization has been addressed in terms of either nuclear quantum effects, spin crossovers or direct structural transitions; often leading to contradictory interpretations when combined. Here, we present high-resolution in-situ 1H-NMR experiments in diamond anvil cells investigating a range of systems containing linear O-H ⋯ O units at pressure ranges of up to 90 GPa covering their respective H-bond symmetrization. We found pronounced minima in the pressure dependence of the NMR resonance line-widths associated with a maximum in hydrogen mobility, precursor to a localisation of hydrogen atoms. These minima, independent of the chemical environment of the O-H ⋯ O unit, can be found in a narrow range of oxygen oxygen distances between 2.44 and 2.45 Å, leading to an average critical oxygen-oxygen distance of \documentclass[12pt]{minimal}
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\begin{document}$${\bar{r}}_{{{{{{{{\rm{OO}}}}}}}}}^{{{{{{{{\rm{crit}}}}}}}}}=2.443(1)$$\end{document}r¯OOcrit=2.443(1) Å. The authors use in-situ high pressure nuclear magnetic resonance spectroscopy in diamond anvil cells to show that at all observed H-bond environments undergo a distinct maximum in hydrogen mobility regardless of the structure of the compounds.
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6
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Depondt P, Huppert S, Finocchi F. The quantum taste of hydrogen. EPJ WEB OF CONFERENCES 2022. [DOI: 10.1051/epjconf/202226301014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Electronic properties of materials are dominated by quantum effects, but nuclei, being much heavier, are usually treated as classical particles. This approximation, although tremendously convenient, is not always valid, even in close to ambient pressure and temperature conditions, especially when light nuclei such as hydrogen are involved. Zero point energy and proton tunneling can be relevant. Isotopic effects, obtained by replacing hydrogen with deuterium, are observed experimentally and are a clear indication of Nuclear Quantum Effects (NQE) since mean values obtained through classical statistical physics do not depend on mass. Introducing NQEs into simulations at an acceptable computational cost raises fundamental questions and yields subtle and unexpected results.
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Lu W, Liu S, Liu G, Hao K, Zhou M, Gao P, Wang H, Lv J, Gou H, Yang G, Wang Y, Ma Y. Disproportionation of SO_{2} at High Pressure and Temperature. PHYSICAL REVIEW LETTERS 2022; 128:106001. [PMID: 35333084 DOI: 10.1103/physrevlett.128.106001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 12/26/2021] [Accepted: 02/18/2022] [Indexed: 06/14/2023]
Abstract
Materials once suffered at high-pressure and high-temperature (HPHT) conditions often exhibit exotic phenomena that defy conventional wisdom. The behaviors of sulfur dioxide (SO_{2}), one of the archetypal simple molecules, at HPHT conditions have attracted a great deal of attention due to its relevance to the S cycle between deep Earth and the atmosphere. Here we report the discovery of an unexpected disproportionation of SO_{2} via bond breaking into elemental S and sulfur trioxide (SO_{3}) at HPHT conditions through a jointly experimental and theoretical study. Measured x-ray diffraction and Raman spectroscopy data allow us to solve unambiguously the crystal structure (space group R3[over ¯]c) of the resultant SO_{3} phase that shows an extended framework structure formed by vertex-sharing octahedra SO_{6}. Our findings lead to a significant extension of the phase diagram of SO_{2} and suggest that SO_{2}, despite its abundance in Earth's atmosphere and ubiquity in other giant planets, is not a stable compound at HPHT conditions relevant to planetary interiors, providing important implications for elucidating the S chemistry in deep Earth and other giant planets.
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Affiliation(s)
- Wencheng Lu
- State Key Laboratory of Superhard Materials and International Center of Computational Method & Software, College of Physics, Jilin University, Changchun 130012, China
| | - Siyu Liu
- State Key Laboratory of Superhard Materials and International Center of Computational Method & Software, College of Physics, Jilin University, Changchun 130012, China
| | - Guangtao Liu
- State Key Laboratory of Superhard Materials and International Center of Computational Method & Software, College of Physics, Jilin University, Changchun 130012, China
| | - Kun Hao
- State Key Laboratory of Superhard Materials and International Center of Computational Method & Software, College of Physics, Jilin University, Changchun 130012, China
| | - Mi Zhou
- State Key Laboratory of Superhard Materials and International Center of Computational Method & Software, College of Physics, Jilin University, Changchun 130012, China
| | - Pengyue Gao
- State Key Laboratory of Superhard Materials and International Center of Computational Method & Software, College of Physics, Jilin University, Changchun 130012, China
| | - Hongbo Wang
- State Key Laboratory of Superhard Materials and International Center of Computational Method & Software, College of Physics, Jilin University, Changchun 130012, China
| | - Jian Lv
- State Key Laboratory of Superhard Materials and International Center of Computational Method & Software, College of Physics, Jilin University, Changchun 130012, China
| | - Huiyang Gou
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, China
| | - Guochun Yang
- State Key Laboratory of Metastable Materials Science and Technology and Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, China
| | - Yanchao Wang
- State Key Laboratory of Superhard Materials and International Center of Computational Method & Software, College of Physics, Jilin University, Changchun 130012, China
| | - Yanming Ma
- State Key Laboratory of Superhard Materials and International Center of Computational Method & Software, College of Physics, Jilin University, Changchun 130012, China
- International Center of Future Science, Jilin University, Changchun 130012, China
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8
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Binns J, Hermann A, Peña-Alvarez M, Donnelly ME, Wang M, Kawaguchi SI, Gregoryanz E, Howie RT, Dalladay-Simpson P. Superionicity, disorder, and bandgap closure in dense hydrogen chloride. SCIENCE ADVANCES 2021; 7:eabi9507. [PMID: 34516915 PMCID: PMC8442878 DOI: 10.1126/sciadv.abi9507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Accepted: 07/21/2021] [Indexed: 06/13/2023]
Abstract
Hydrogen bond networks play a crucial role in biomolecules and molecular materials such as ices. How these networks react to pressure directs their properties at extreme conditions. We have studied one of the simplest hydrogen bond formers, hydrogen chloride, from crystallization to metallization, covering a pressure range of more than 2.5 million atmospheres. Following hydrogen bond symmetrization, we identify a previously unknown phase by the appearance of new Raman modes and changes to x-ray diffraction patterns that contradict previous predictions. On further compression, a broad Raman band supersedes the well-defined excitations of phase V, despite retaining a crystalline chlorine substructure. We propose that this mode has its origin in proton (H+) mobility and disorder. Above 100 GPa, the optical bandgap closes linearly with extrapolated metallization at 240(10) GPa. Our findings suggest that proton dynamics can drive changes in these networks even at very high densities.
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Affiliation(s)
- Jack Binns
- Center for High Pressure Science & Technology Advanced Research, 1690 Cailun Rd, Pudong, Shanghai 201203, China
| | - Andreas Hermann
- School of Physics and Centre for Science at Extreme Conditions, University of Edinburgh, Edinburgh EH9 3JZ, UK
| | - Miriam Peña-Alvarez
- School of Physics and Centre for Science at Extreme Conditions, University of Edinburgh, Edinburgh EH9 3JZ, UK
| | - Mary-Ellen Donnelly
- Center for High Pressure Science & Technology Advanced Research, 1690 Cailun Rd, Pudong, Shanghai 201203, China
| | - Mengnan Wang
- Center for High Pressure Science & Technology Advanced Research, 1690 Cailun Rd, Pudong, Shanghai 201203, China
| | | | - Eugene Gregoryanz
- Center for High Pressure Science & Technology Advanced Research, 1690 Cailun Rd, Pudong, Shanghai 201203, China
- School of Physics and Centre for Science at Extreme Conditions, University of Edinburgh, Edinburgh EH9 3JZ, UK
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, China
| | - Ross T. Howie
- Center for High Pressure Science & Technology Advanced Research, 1690 Cailun Rd, Pudong, Shanghai 201203, China
| | - Philip Dalladay-Simpson
- Center for High Pressure Science & Technology Advanced Research, 1690 Cailun Rd, Pudong, Shanghai 201203, China
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9
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NOGUCHI N. Measurements for Diffusion Coefficients of Hydrogen in Solids at High Pressures Using Micro-Raman Spectroscopy. BUNSEKI KAGAKU 2021. [DOI: 10.2116/bunsekikagaku.70.351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Naoki NOGUCHI
- Graduate School of Technology, Industrial and Social Sciences, Tokushima University
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10
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Conway LJ, Brown K, Loveday JS, Hermann A. Ammonium fluoride's analogy to ice: Possibilities and limitations. J Chem Phys 2021; 154:204501. [PMID: 34241159 DOI: 10.1063/5.0048516] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Ammonium fluoride, NH4F, is often seen as an analog to ice, with several of its solid phases closely resembling known ice phases. While its ionic and hydrogen-ordered nature puts topological constraints on the ice-like network structures it can form, it is not clear what consequences these constraints have for NH4F compound formation and evolution. Here, we explore computationally the reach and eventual limits of the ice analogy for ammonium fluoride. By combining data mining of known and hypothetical ice networks with crystal structure prediction and density functional calculations, we explore the high-pressure phase diagram of NH4F and host-guest compounds of its hydrides. Pure NH4F departs from ice-like behavior above 80 GPa with the emergence of close-packed ionic structures. The predicted stability of NH4F hydrides shows that NH4F can act as a host to small guest species, albeit in a topologically severely constraint configuration space. Finally, we explore the binary NH3-HF chemical space, where we find candidate structures for several unsolved polyfluoride phases; among them is the chemical analog to H2O2 dihydrate.
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Affiliation(s)
- L J Conway
- SUPA, School of Physics and Astronomy and Centre for Science at Extreme Conditions, The University of Edinburgh, Edinburgh EH9 3FD, United Kingdom
| | - K Brown
- SUPA, School of Physics and Astronomy and Centre for Science at Extreme Conditions, The University of Edinburgh, Edinburgh EH9 3FD, United Kingdom
| | - J S Loveday
- SUPA, School of Physics and Astronomy and Centre for Science at Extreme Conditions, The University of Edinburgh, Edinburgh EH9 3FD, United Kingdom
| | - A Hermann
- SUPA, School of Physics and Astronomy and Centre for Science at Extreme Conditions, The University of Edinburgh, Edinburgh EH9 3FD, United Kingdom
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11
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Mukherjee S, Bagchi B. Theoretical analyses of pressure induced glass transition in water: Signatures of surprising diffusion-entropy scaling across the transition. Mol Phys 2021. [DOI: 10.1080/00268976.2021.1930222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Saumyak Mukherjee
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore, India
| | - Biman Bagchi
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore, India
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12
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Lei J, Lim J, Kim M, Yoo CS. Crystal Structure of Symmetric Ice X in H 2O-H 2 and H 2O-He under Pressure. J Phys Chem Lett 2021; 12:4707-4712. [PMID: 33979522 DOI: 10.1021/acs.jpclett.1c00606] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Ice VII and ice X are the two most dominant phases, stable over a large pressure range between 2 and 150 GPa and made of fundamentally different chemical bonding. Yet, the two ice phases share a similar bcc-based crystal structure and lattice constants, resulting in a challenge to discern the crystal structure of ice VII and ice X. Here, we present well-resolved X-ray diffraction data of H2O in quasi-hydrostatic H2 and He pressure media, clearly resolving the two ice phases to 130 GPa and the dissociative nature of ice VII to X transition occurring at 20-50 GPa in H2O-H2 and 60-70 GPa in H2O-He. The present diffraction data permits, for the first time, the accurate determination of the bulk moduli B0 of 225 (or 228) GPa for ice X and 6.2 (or 4.5) GPa for ice VII, in H2O-H2 (or H2O-He), which can provide new constraints for Giant planetary models.
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Affiliation(s)
- Jialin Lei
- Institute of Shock Physics and Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Jinhyuk Lim
- Institute of Shock Physics and Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Minseob Kim
- Institute of Shock Physics and Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Choong-Shik Yoo
- Institute of Shock Physics and Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
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13
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Hydrogen Bonds: Raman Spectroscopic Study. Int J Mol Sci 2021; 22:ijms22105380. [PMID: 34065358 PMCID: PMC8161095 DOI: 10.3390/ijms22105380] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 05/14/2021] [Accepted: 05/18/2021] [Indexed: 11/26/2022] Open
Abstract
The work outlines general ideas on how the frequency and the intensity of proton vibrations of X–H···Y hydrogen bonding are formed as the bond evolves from weak to maximally strong bonding. For this purpose, the Raman spectra of different chemical compounds with moderate, strong, and extremely strong hydrogen bonds were obtained in the temperature region of 5 K–300 K. The dependence of the proton vibrational frequency is schematically presented as a function of the rigidity of O-H···O bonding. The problems of proton dynamics on tautomeric O–H···O bonds are considered. A brief description of the N–H···O and C–H···Y hydrogen bonds is given.
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Abstract
Nondipolar magnetic fields exhibited at Uranus and Neptune may be derived from a unique geometry of their icy mantle with a thin convective layer on top of a stratified nonconvective layer. The presence of superionic H2O and NH3 has been thought as an explanation to stabilize such nonconvective regions. However, a lack of experimental data on the physical properties of those superionic phases has prevented the clarification of this matter. Here, our Brillouin measurements for NH3 show a two-stage reduction in longitudinal wave velocity (V p) by ∼9% and ∼20% relative to the molecular solid in the temperature range of 1,500 K and 2,000 K above 47 GPa. While the first V p reduction observed at the boundary to the superionic α phase was most likely due to the onset of the hydrogen diffusion, the further one was likely attributed to the transition to another superionic phase, denoted γ phase, exhibiting the higher diffusivity. The reduction rate of V p in the superionic γ phase, comparable to that of the liquid, implies that this phase elastically behaves almost like a liquid. Our measurements show that superionic NH3 becomes convective and cannot contribute to the internal stratification.
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Kolesov BA, Chupina AV, Berezin AS, Kompankov NB, Abramov PA, Sokolov MN. Proton motion inside [(DMF) 2H] 2[W 6Cl 14]: structural, Raman and luminescence studies. Phys Chem Chem Phys 2020; 22:25344-25352. [PMID: 33140770 DOI: 10.1039/d0cp04152a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Protonation of DMF by (H7O3)2[W6Cl14] results in the appearance of strongly proton coupled [(DMF)2H]+ dimers. Such units are captured as the cationic part of [(DMF)2H]2[W6Cl14] (1). The proton behavior in such dimers was studied for the first time with single crystal X-ray diffraction (XRD) and 1H MAS NMR, Raman and photoluminescence (PL) spectroscopic techniques. The experimental data reveal the presence of two types of [(DMF)2H]+ dimers in 1 (cisoidal and transoidal, with respect to the mutual orientations of their C-O groups) which differ in terms of the degree to which they interact with the cluster anions as the temperature decreases. At room temperature all the OO distances in the [(DMF)2H]+ dimers are very short (2.375 Å) and almost equal. 1H MAS NMR spectra show a resonance line at 18.7 ppm which is very close to that observed in sodium hydrogen maleate with a strong hydrogen bond belonging to a single-well potential of proton motion. The temperature decrease leads to the differentiation of [(DMF)2H]+ dimers due to the elongation of the OO distance in one pair while keeping a practically constant OO distance in the second pair. The analysis of the cation-anion interactions reveals a strong difference between these two types of dimers which results from the shifting of one DMF molecule toward a terminal Cl- ligand of the cluster anion. The DFT calculations were used to show the difference in OH+O stretches for two different dimers. Moreover, we have found the PL of such dimeric units in the solid state. The temperature screening of the PL behavior demonstrates two types of luminescent centers at low temperatures which coalesce at 298 K. The proton motion in the hydrogen bond was studied using Raman spectroscopy, which was beneficial to monitor the complex behavior over a very broad temperature range from 5 to 298 K. According to the Raman data, we are dealing with a symmetric double-well potential for the hydrogen bond at room temperature, which becomes a broad single well potential below 110 K for the [(DMF)2H]+ cation with a longer OO distance (the cisoidal isomer) and below 60 K for the [(DMF)2H]+ cation with a shorter OO distance (the transoidal isomer).
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Affiliation(s)
- Boris A Kolesov
- Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Akad. Lavrentiev Ave, 630090 Novosibirsk, Russia.
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17
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Futera Z, Tse JS, English NJ. Possibility of realizing superionic ice VII in external electric fields of planetary bodies. SCIENCE ADVANCES 2020; 6:eaaz2915. [PMID: 32494738 PMCID: PMC7244312 DOI: 10.1126/sciadv.aaz2915] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 03/18/2020] [Indexed: 05/31/2023]
Abstract
In a superionic (SI) ice phase, oxygen atoms remain crystallographically ordered while protons become fully diffusive as a result of intramolecular dissociation. Ice VII's importance as a potential candidate for a SI ice phase has been conjectured from anomalous proton diffusivity data. Theoretical studies indicate possible SI prevalence in large-planet mantles (e.g., Uranus and Neptune) and exoplanets. Here, we realize sustainable SI behavior in ice VII by means of externally applied electric fields, using state-of-the-art nonequilibrium ab initio molecular dynamics to witness at first hand the protons' fluid dance through a dipole-ordered ice VII lattice. We point out the possibility of SI ice VII on Venus, in its strong permanent electric field.
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Affiliation(s)
- Zdenek Futera
- Faculty of Science, University of South Bohemia, Branisovska 1760, Ceske Budejovice 370 05, Czech Republic
| | - John S. Tse
- Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5E2, Canada
| | - Niall J. English
- School of Chemical and Bioprocess Engineering, University College Dublin, Belfield, Dublin 4, Ireland
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Abstract
Helmholtz energy of ice VII–X is determined in a pressure regime extending to 450 GPa at 300 K using local-basis-functions in the form of b-splines. The new representation for the equation of state is embedded in a physics-based inverse theory framework of parameter estimation. Selected pressures as a function of volume from 14 prior experimental studies and two theoretical studies constrain the behavior of Helmholtz energy. Separately measured bulk moduli, not used to construct the representation, are accurately replicated below about 20 GPa and above 60 GPa. In the intermediate range of pressure, the experimentally determined moduli are larger and have greater scatter than values predicted using the Helmholtz representation. Although systematic error in the determination of elastic moduli is possible and likely, the alternative hypothesis is a slow relaxation time associated with changes in proton mobility or the ice VII to X transition. A correlation is observed between anomalies in the pressure derivative of the predicted bulk modulus and previously suggested higher-order phase transitions. Improved determinations of elastic properties at high pressure would allow refinement of the current equation of state. More generally, the current method of data assimilation is broadly applicable to other materials in high-pressure studies and for investigations of planetary interiors.
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19
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Trcera N, Layek S, Shulman M, Polian A, Irifune T, Itié JP, Rozenberg GK. XAS studies of pressure-induced structural and electronic transformations in α-FeOOH. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2019; 31:325401. [PMID: 31035277 DOI: 10.1088/1361-648x/ab1db1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Structural and electronic transformation taking place in α-FeOOH goethite have been studied by Fe K-edge x-ray absorption spectroscopy at pressures up to 50 GPa. These studies have shown the symmetrization of FeO6 octahedra coinciding with the Fe3+ high to low spin transition at pressure above ~45 GPa. Our data are in excellent agreement with the results of recent single crystal XRD and Mössbauer spectroscopy studies (Xu et al 2013 Phys. Rev. Lett. 111 175501), supporting the H-bonds symmetrization in iron oxyhydroxide, resulting from the Fe3+ high-to-low spin crossover at above 45 GPa. Our study shows an applicability of the x-ray absorption spectroscopy in a further study of the H-bonds symmetrization phenomenon.
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Affiliation(s)
- N Trcera
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette Cedex, France
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20
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Chen H, Zhou S, Morgan D, Prakapenka V, Greenberg E, Leinenweber K, Shim SH. The O-O Bonding and Hydrogen Storage in the Pyrite-type PtO 2. Inorg Chem 2019; 58:8300-8307. [PMID: 31194523 DOI: 10.1021/acs.inorgchem.9b00046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We have synthesized pyrite-type PtO2 (py-PtO2) at 50-60 GPa and successfully recovered it at 1 bar. The observed O-O stretching vibration in Raman spectra provides direct evidence for inter-oxygen bonding in the structure. We also identified the O-H vibrations in py-PtO2 synthesized from the low-temperature areas, indicating hydrogenation, py-PtO2H x ( x ≤ 1). Diffraction patterns are consistent with a range of degrees of hydrogenation controlled by temperature. We found that py-PtO2 has a high bulk modulus, 314 ± 4 GPa. The chemical behaviors found in py-PtO2 have implications for the hydrogen storage in materials with anion-anion bonding, and the geochemistry of oxygen, hydrogen, and transition metals in the deep planetary interiors.
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Affiliation(s)
- Huawei Chen
- School of Earth and Space Exploration , Arizona State University , Tempe , Arizona 85287-6004 , United States
| | - Shuxiang Zhou
- Department of Materials Science and Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
| | - Dane Morgan
- Department of Materials Science and Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
| | - Vitali Prakapenka
- GeoSoilEnviroCars , University of Chicago , Chicago , Illinois 60439 , United States
| | - Eran Greenberg
- GeoSoilEnviroCars , University of Chicago , Chicago , Illinois 60439 , United States
| | - Kurt Leinenweber
- Eyring Materials Center , Arizona State University , Tempe , Arizona 85287-1604 , United States
| | - Sang-Heon Shim
- School of Earth and Space Exploration , Arizona State University , Tempe , Arizona 85287-6004 , United States
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21
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Bove LE, Ranieri U. Salt- and gas-filled ices under planetary conditions. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2019; 377:20180262. [PMID: 30982457 PMCID: PMC6501915 DOI: 10.1098/rsta.2018.0262] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/26/2019] [Indexed: 06/09/2023]
Abstract
In recent years, evidence has emerged that solid water can contain substantial amounts of guest species, such as small gas molecules-in gas hydrate structures-or ions-in salty ice structures-and that these 'filled' ice structures can be stable under pressures of tens of Gigapascals and temperatures of hundreds of Kelvins. The inclusion of guest species can strongly modify the density, vibrational, diffusive and conductivity properties of ice under high pressure, and promote novel exotic properties. In this review, we discuss our experimental findings and molecular dynamics simulation results on the structures formed by salt- and gas-filled ices, their unusual properties, and the unexpected dynamical phenomena observed under pressure and temperature conditions relevant for planetary interiors modelling. This article is part of the theme issue 'The physics and chemistry of ice: scaffolding across scales, from the viability of life to the formation of planets'.
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Affiliation(s)
- Livia E. Bove
- Dipartimento di Fisica, Universitá di Roma ‘La Sapienza’, 00185Roma, Italy
- Sorbonne Université, CNRS UMR 7590, IMPMC, 75005 Paris, France
- EPSL, IPHYS, École polytechnique fédérale de Lausanne, Station 3, CH-1015 Lausanne, Switzerland
| | - Umbertoluca Ranieri
- Sorbonne Université, CNRS UMR 7590, IMPMC, 75005 Paris, France
- EPSL, IPHYS, École polytechnique fédérale de Lausanne, Station 3, CH-1015 Lausanne, Switzerland
- Institut Laue-Langevin, 71 avenue des Martyrs, 38042 Grenoble, France
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22
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Skarmoutsos I, Mossa S, Guardia E. The effect of polymorphism on the structural, dynamic and dielectric properties of plastic crystal water: A molecular dynamics simulation perspective. J Chem Phys 2019; 150:124506. [PMID: 30927901 DOI: 10.1063/1.5084217] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We have employed molecular dynamics simulations based on the TIP4P/2005 water model to investigate the local structural, dynamical, and dielectric properties of the two recently reported body-centered-cubic and face-centered-cubic plastic crystal phases of water. Our results reveal significant differences in the local orientational structure and rotational dynamics of water molecules for the two polymorphs. The probability distributions of trigonal and tetrahedral order parameters exhibit a multi-modal structure, implying the existence of significant local orientational heterogeneities, particularly in the face-centered-cubic phase. The calculated hydrogen bond statistics and dynamics provide further indications of the existence of a strongly heterogeneous and rapidly interconverting local orientational structural network in both polymorphs. We have observed a hindered molecular rotation, much more pronounced in the body-centered-cubic phase, which is reflected by the decay of the fourth-order Legendre reorientational correlation functions and angular Van Hove functions. Molecular rotation, however, is additionally hindered in the high-pressure liquid compared to the plastic crystal phase. The results obtained also reveal significant differences in the dielectric properties of the polymorphs due to the different dipolar orientational correlation characterizing each phase.
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Affiliation(s)
- Ioannis Skarmoutsos
- Departament de Física, Universitat Politècnica de Catalunya, Campus Nord-Edifici B4-B5, Jordi Girona 1-3, Barcelona E-08034, Spain
| | - Stefano Mossa
- Université Grenoble Alpes, CEA, CNRS, INAC-SyMMES, 38000 Grenoble, France
| | - Elvira Guardia
- Departament de Física, Universitat Politècnica de Catalunya, Campus Nord-Edifici B4-B5, Jordi Girona 1-3, Barcelona E-08034, Spain
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23
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Affiliation(s)
- Wei Fang
- School of Physics and Collaborative Innovation Centre of Quantum Matter, Peking University, Beijing, People's Republic of China
- Thomas Young Centre, London Centre for Nanotechnology, and Department of Physics and Astronomy, University College London, London, UK
- Laboratory of Physical Chemistry, ETH Zurich, Zurich, Switzerland
| | - Ji Chen
- Department of Electronic Structure Theory, Max Plank Institute for Solid State Research, Stuttgart, Germany
| | - Yexin Feng
- School of Physics and Electronics, Hunan University, Changsha, People's Republic of China
| | - Xin-Zheng Li
- School of Physics and Collaborative Innovation Centre of Quantum Matter, Peking University, Beijing, People's Republic of China
- State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, Peking University, Beijing, People's Republic of China
| | - Angelos Michaelides
- Thomas Young Centre, London Centre for Nanotechnology, and Department of Physics and Astronomy, University College London, London, UK
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24
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Salzmann CG. Advances in the experimental exploration of water's phase diagram. J Chem Phys 2019; 150:060901. [PMID: 30770019 DOI: 10.1063/1.5085163] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Water's phase diagram displays enormous complexity with currently 17 experimentally confirmed polymorphs of ice and several more predicted computationally. For almost 120 years, it has been a stomping ground for scientific discovery, and ice research has often been a trailblazer for investigations into a wide range of materials-related phenomena. Here, the experimental progress of the last couple of years is reviewed, and open questions as well as future challenges are discussed. The specific topics include (i) the polytypism and stacking disorder of ice I, (ii) the mechanism of the pressure amorphization of ice I, (iii) the emptying of gas-filled clathrate hydrates to give new low-density ice polymorphs, (iv) the effects of acid/base doping on hydrogen-ordering phase transitions as well as (v) the formation of solid solutions between salts and the ice polymorphs, and the effect this has on the appearance of the phase diagram. In addition to continuing efforts to push the boundaries in terms of the extremes of pressure and temperature, the exploration of the "chemical" dimensions of ice research appears to now be a newly emerging trend. It is without question that ice research has entered a very exciting era.
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Affiliation(s)
- Christoph G Salzmann
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
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25
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Ikeda T. First principles isothermal-isobaric centroid molecular dynamics simulation of high pressure ices. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2019.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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26
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Liu J, Hu Q, Bi W, Yang L, Xiao Y, Chow P, Meng Y, Prakapenka VB, Mao HK, Mao WL. Altered chemistry of oxygen and iron under deep Earth conditions. Nat Commun 2019; 10:153. [PMID: 30635572 PMCID: PMC6329810 DOI: 10.1038/s41467-018-08071-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 12/12/2018] [Indexed: 11/09/2022] Open
Abstract
A drastically altered chemistry was recently discovered in the Fe-O-H system under deep Earth conditions, involving the formation of iron superoxide (FeO2Hx with x = 0 to 1), but the puzzling crystal chemistry of this system at high pressures is largely unknown. Here we present evidence that despite the high O/Fe ratio in FeO2Hx, iron remains in the ferrous, spin-paired and non-magnetic state at 60-133 GPa, while the presence of hydrogen has minimal effects on the valence of iron. The reduced iron is accompanied by oxidized oxygen due to oxygen-oxygen interactions. The valence of oxygen is not -2 as in all other major mantle minerals, instead it varies around -1. This result indicates that like iron, oxygen may have multiple valence states in our planet's interior. Our study suggests a possible change in the chemical paradigm of how oxygen, iron, and hydrogen behave under deep Earth conditions.
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Affiliation(s)
- Jin Liu
- Center for High Pressure Science and Technology Advanced Research, Beijing, 100094, China.,Department of Geological Sciences, Stanford University, Stanford, CA, 94305, USA
| | - Qingyang Hu
- Center for High Pressure Science and Technology Advanced Research, Beijing, 100094, China.
| | - Wenli Bi
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL, 60439, USA.,Department of Geology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Liuxiang Yang
- Center for High Pressure Science and Technology Advanced Research, Beijing, 100094, China.,Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC, 20015, USA
| | - Yuming Xiao
- HPCAT, X-Ray Science Division, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - Paul Chow
- HPCAT, X-Ray Science Division, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - Yue Meng
- HPCAT, X-Ray Science Division, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - Vitali B Prakapenka
- Center for Advanced Radiation Sources, University of Chicago, Chicago, IL, 60439, USA
| | - Ho-Kwang Mao
- Center for High Pressure Science and Technology Advanced Research, Beijing, 100094, China. .,Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC, 20015, USA.
| | - Wendy L Mao
- Department of Geological Sciences, Stanford University, Stanford, CA, 94305, USA. .,Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA.
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27
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Naden Robinson V, Marqués M, Wang Y, Ma Y, Hermann A. Novel phases in ammonia-water mixtures under pressure. J Chem Phys 2018; 149:234501. [DOI: 10.1063/1.5063569] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Affiliation(s)
- Victor Naden Robinson
- Centre for Science at Extreme Conditions and SUPA, School of Physics and Astronomy, The University of Edinburgh, Edinburgh EH9 3FD, United Kingdom
| | - Miriam Marqués
- Centre for Science at Extreme Conditions and SUPA, School of Physics and Astronomy, The University of Edinburgh, Edinburgh EH9 3FD, United Kingdom
| | - Yanchao Wang
- State Key Laboratory for Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
- Innovation Center for Computational Physics Methods and Software, College of Physics, Jilin University, Changchun 130012, China
| | - Yanming Ma
- State Key Laboratory for Superhard Materials, College of Physics, Jilin University, Changchun 130012, China
- Innovation Center for Computational Physics Methods and Software, College of Physics, Jilin University, Changchun 130012, China
- International Center for Future Science, Jilin University, Changchun 130012, China
| | - Andreas Hermann
- Centre for Science at Extreme Conditions and SUPA, School of Physics and Astronomy, The University of Edinburgh, Edinburgh EH9 3FD, United Kingdom
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28
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Sun CQ. Aqueous charge injection: solvation bonding dynamics, molecular nonbond interactions, and extraordinary solute capabilities. INT REV PHYS CHEM 2018. [DOI: 10.1080/0144235x.2018.1544446] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Chang Q. Sun
- EBEAM, Yangtze Normal University, Chongqing, People's Republic of China
- NOVITAS, EEE, Nanyang Technological University, Singapore, Singapore
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29
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Bajaj N, Bhatt H, Murli C, Vishwakarma SR, Chitra R, Ravindran TR, Deo MN. Perceptible isotopic effect in 3D-framework of α-glycine at low temperatures. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 204:495-507. [PMID: 29975911 DOI: 10.1016/j.saa.2018.06.087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 06/22/2018] [Accepted: 06/23/2018] [Indexed: 06/08/2023]
Abstract
Glycine, the most fundamental amino acid, albeit studied for many decades, has kept researchers captivated with interesting structural variations relevant to important biological, astrophysical and technological applications. We report here a noticeable effect of deuteration on the three dimensional hydrogen bonding network of α-glycine using low temperature infrared absorption studies in a wide spectral range, corroborated with Raman scattering studies. These systematic studies in the range 300-4.2 K have demonstrated a relatively compact assembly of glycine molecules in the three dimensional bilayered structure of hydrogenated glycine (gly-h) at low temperatures. This is inferred from a remarkable temperature effect in the weak intra-bilayer hydrogen bond ~ along the b-axis, which strengthens upon cooling. A pronounced increase in the intensity of NH3 torsional and NH stretching modes has been observed. This is accompanied with a large rate of stiffening and softening respectively of these modes upon cooling and a change in slope across 210 K and 80 K. In contrast, the D---O hydrogen bond lengths in fully deuterated isotope (gly-d), as estimated using empirical correlation, show that the weak intra-bilayer hydrogen bond is not strengthened upon cooling down to 180 K, whereas the stronger intra-layer hydrogen bonds in the ac-plane become further strong. The ND3 torsional vibrations show no temperature effect. This implies a relatively stable two dimensional layered structure formed by strongly hydrogen bonded glycine sheets in the ac-plane. Below 180 K, similar qualitative trends have been obtained for the hydrogen bond lengths in the two isotopes. In addition, temperature induced variation of the characteristic "indicator" band of zwitterionic gly-h and gly-d has also been reported.
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Affiliation(s)
- Naini Bajaj
- High Pressure & Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai, India; Homi Bhabha National Institute, Bhabha Atomic Research Centre, Mumbai, India
| | - Himal Bhatt
- High Pressure & Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai, India.
| | - Chitra Murli
- High Pressure & Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai, India; Homi Bhabha National Institute, Bhabha Atomic Research Centre, Mumbai, India
| | - S R Vishwakarma
- High Pressure & Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai, India
| | - R Chitra
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai, India
| | - T R Ravindran
- Materials Science Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, India
| | - M N Deo
- High Pressure & Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Mumbai, India; Homi Bhabha National Institute, Bhabha Atomic Research Centre, Mumbai, India.
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30
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Jiang L, Yao SK, Zhang K, Wang ZR, Luo HW, Zhu XL, Gu Y, Zhang P. Exotic Spectra and Lattice Vibrations of Ice X Using the DFT Method. Molecules 2018; 23:molecules23112780. [PMID: 30373183 PMCID: PMC6278396 DOI: 10.3390/molecules23112780] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 10/23/2018] [Accepted: 10/24/2018] [Indexed: 11/16/2022] Open
Abstract
A typical vibrational spectrum in the ice phase has four separate bands: Translation, libration, bending, and stretching. Ice X, the final ice phase under high pressure, shows an exotic vibrational spectrum. Based on harmonic approximation, an ideal crystal of ice X has one peak, at 998 cm-1, for Raman scattering and two peaks, at 450 cm-1 and 1507 cm-1, for infrared absorption in this work. These three characteristic peaks are indicators of the phase transition between ice VII and VIII and ice X. Despite many experimental and theoretical works on ice X, only this study has clearly indicated these characteristic peaks in the region of the IR band. The phonon density of states shows quite different features than ice VIII, which could be verified by inelastic neutron scattering in the future. The dynamic processes of 15 vibrational normal modes are discussed and the typical hydrogen bonds are missing.
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Affiliation(s)
- Lu Jiang
- School of Space Science and Physics, Shandong University, Weihai 264209, China.
| | - Shu-Kai Yao
- School of Space Science and Physics, Shandong University, Weihai 264209, China.
| | - Kai Zhang
- School of Space Science and Physics, Shandong University, Weihai 264209, China.
| | - Ze-Ren Wang
- School of Space Science and Physics, Shandong University, Weihai 264209, China.
| | - Hui-Wen Luo
- School of Space Science and Physics, Shandong University, Weihai 264209, China.
| | - Xu-Liang Zhu
- School of Space Science and Physics, Shandong University, Weihai 264209, China.
| | - Yue Gu
- School of Space Science and Physics, Shandong University, Weihai 264209, China.
| | - Peng Zhang
- School of Space Science and Physics, Shandong University, Weihai 264209, China.
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31
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Direct observation of symmetrization of hydrogen bond in δ-AlOOH under mantle conditions using neutron diffraction. Sci Rep 2018; 8:15520. [PMID: 30341340 PMCID: PMC6195538 DOI: 10.1038/s41598-018-33598-2] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 10/01/2018] [Indexed: 11/09/2022] Open
Abstract
At ambient pressure, the hydrogen bond in materials such as ice, hydrates, and hydrous minerals that compose the Earth and icy planets generally takes an asymmetric O-H···O configuration. Pressure significantly affects this configuration, and it is predicted to become symmetric, such that the hydrogen is centered between the two oxygen atoms at high pressure. Changes of physical properties of minerals relevant to this symmetrization have been found; however, the atomic configuration around this symmetrization has remained elusive so far. Here we observed the pressure response of the hydrogen bonds in the aluminous hydrous minerals δ-AlOOH and δ-AlOOD by means of a neutron diffraction experiment. We find that the transition from P21nm to Pnnm at 9.0 GPa, accompanied by a change in the axial ratios of δ-AlOOH, corresponds to the disorder of hydrogen bond between two equivalent sites across the center of the O···O line. Symmetrization of the hydrogen bond is observed at 18.1 GPa, which is considerably higher than the disorder pressure. Moreover, there is a significant isotope effect on hydrogen bond geometry and transition pressure. This study indicates that disorder of the hydrogen bond as a precursor of symmetrization may also play an important role in determining the physical properties of minerals such as bulk modulus and seismic wave velocities in the Earth's mantle.
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32
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Ishii Y, Komatsu K, Nakano S, Machida S, Hattori T, Sano-Furukawa A, Kagi H. Pressure-induced stacking disorder in boehmite. Phys Chem Chem Phys 2018; 20:16650-16656. [PMID: 29873355 DOI: 10.1039/c8cp02565g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The structure of an aluminum layered hydroxide, boehmite (γ-AlOOH), as a function of pressure was studied by using in situ synchrotron X-ray and neutron diffraction. Peak broadening, which is only found for hkl (h ≠ 0) peaks in the X-ray diffraction patterns, is explained by stacking disorder accompanying a continuously increasing displacement of the AlO6 octahedral layer along the a-axis. This finding could be the first experimental result for pressure-induced stacking disorder driven by continuous layer displacement. The magnitude of the layer displacement was estimated from the X-ray scattering profile calculation based on the stacking disordered structure model. Hydrogen bond geometries of boehmite, obtained by structure refinements of the observed neutron diffraction patterns for the deuterated sample up to 10 GPa, show linearly approaching O-D covalent and DO hydrogen bond distances and they merge below 26 GPa. Pressure-induced stacking disorder makes the electrostatic potential of hydrogen bonds asymmetric, yielding less chance for proton-tunnelling.
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Affiliation(s)
- Y Ishii
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
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33
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Pressure-induced phase transition of KTa1/2Nb1/2O3 solid solutions: A first-principles study. Chem Phys Lett 2018. [DOI: 10.1016/j.cplett.2018.03.042] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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34
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Tschauner O, Huang S, Greenberg E, Prakapenka VB, Ma C, Rossman GR, Shen AH, Zhang D, Newville M, Lanzirotti A, Tait K. Ice-VII inclusions in diamonds: Evidence for aqueous fluid in Earth’s deep mantle. Science 2018; 359:1136-1139. [DOI: 10.1126/science.aao3030] [Citation(s) in RCA: 128] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 01/19/2018] [Indexed: 11/02/2022]
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35
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Fanetti S, Citroni M, Dziubek K, Nobrega MM, Bini R. The role of H-bond in the high-pressure chemistry of model molecules. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2018; 30:094001. [PMID: 29345624 DOI: 10.1088/1361-648x/aaa8cf] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Pressure is an extraordinary tool to modify direction and strength of intermolecular interactions with important consequences on the chemical stability of molecular materials. The decrease of the distance among nearest neighbour molecules can give rise to reactive configurations reflecting the crystal arrangement and leading to association processes. In this context, the role of the H-bonds is very peculiar because their usual strengthening with rising pressure does not necessarily configure a decrease of the reaction activation energy but, on the contrary, can give rise to an anomalous stability of the system. In spite of this central role, the mechanisms by which a chemical reaction is favoured or prevented by H-bonding under high pressure conditions is a poorly explored field. Here we review a few studies where the chemical behaviour of simple molecular systems under static compression was related to the H-bonding evolution with pressure. These results are able to clarify a wealth of changes of the chemical and physical properties caused by the strengthening with pressure of the H-bonding network and provide additional tools to understand the mechanisms of high-pressure reactivity, a mandatory step to make these synthetic methods of potential interest for applicative purposes.
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Affiliation(s)
- Samuele Fanetti
- LENS, European Laboratory for Non-linear Spectroscopy, Via N. Carrara 1, I-50019 Sesto Fiorentino, Firenze, Italy. Dipartimento di Chimica 'Ugo Schiff' dell'Università degli Studi di Firenze, Via della Lastruccia 3, I-50019 Sesto Fiorentino, Firenze, Italy
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36
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Wang Y, Zhang H, Yang X, Jiang S, Goncharov AF. Kinetic boundaries and phase transformations of iceiat high pressure. J Chem Phys 2018; 148:044508. [DOI: 10.1063/1.5017507] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Affiliation(s)
- Yu Wang
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, Anhui, People’s Republic of China
- University of Science and Technology of China, Hefei 230026, Anhui, People’s Republic of China
| | - Huichao Zhang
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, Anhui, People’s Republic of China
- University of Science and Technology of China, Hefei 230026, Anhui, People’s Republic of China
| | - Xue Yang
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, Anhui, People’s Republic of China
| | - Shuqing Jiang
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, Anhui, People’s Republic of China
| | - Alexander F. Goncharov
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, Anhui, People’s Republic of China
- University of Science and Technology of China, Hefei 230026, Anhui, People’s Republic of China
- Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Road NW, Washington, DC 20015, USA
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37
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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: 1.0] [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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38
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Liu C, Mafety A, Queyroux JA, Wilson CW, Zhang H, Béneut K, Le Marchand G, Baptiste B, Dumas P, Garbarino G, Finocchi F, Loveday JS, Pietrucci F, Saitta AM, Datchi F, Ninet S. Topologically frustrated ionisation in a water-ammonia ice mixture. Nat Commun 2017; 8:1065. [PMID: 29051485 PMCID: PMC5648802 DOI: 10.1038/s41467-017-01132-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 08/22/2017] [Indexed: 11/29/2022] Open
Abstract
Water and ammonia are considered major components of the interiors of the giant icy planets and their satellites, which has motivated their exploration under high P–T conditions. Exotic forms of these pure ices have been revealed at extreme (~megabar) pressures, notably symmetric, ionic, and superionic phases. Here we report on an extensive experimental and computational study of the high-pressure properties of the ammonia monohydrate compound forming from an equimolar mixture of water and ammonia. Our experiments demonstrate that relatively mild pressure conditions (7.4 GPa at 300 K) are sufficient to transform ammonia monohydrate from a prototypical hydrogen-bonded crystal into a form where the standard molecular forms of water and ammonia coexist with their ionic counterparts, hydroxide (OH−) and ammonium \documentclass[12pt]{minimal}
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\begin{document}$$\left( {{\rm{NH}}_{\rm{4}}^{\rm{ + }}} \right)$$\end{document}NH4+ ions. Using ab initio atomistic simulations, we explain this surprising coexistence of neutral/charged species as resulting from a topological frustration between local homonuclear and long-ranged heteronuclear ionisation mechanisms. Water and ammonia are major constituents of icy planet interiors, however their phase behaviour under extreme conditions remain relatively unknown. Here, the authors show that ammonia monohydrate transforms under pressure into an alloy composed of molecules as well as ions, owing to a topological frustration.
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Affiliation(s)
- C Liu
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), Sorbonne Universités-UPMC Univ. Paris 6, CNRS UMR 7590, IRD UMR 206, MNHN, 4 Place Jussieu, F-75005, Paris, France.,Institute of Atomic and Molecular Physics and State Key Laboratory of Superhard Materials, Jilin University, Changchun, 130012, China
| | - A Mafety
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), Sorbonne Universités-UPMC Univ. Paris 6, CNRS UMR 7590, IRD UMR 206, MNHN, 4 Place Jussieu, F-75005, Paris, France
| | - J A Queyroux
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), Sorbonne Universités-UPMC Univ. Paris 6, CNRS UMR 7590, IRD UMR 206, MNHN, 4 Place Jussieu, F-75005, Paris, France
| | - C W Wilson
- SUPA, School of Physics Astronomy Centre for Science at Extreme Conditions, The University of Edinburgh, Edinburgh, EH9 3JZ, UK
| | - H Zhang
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), Sorbonne Universités-UPMC Univ. Paris 6, CNRS UMR 7590, IRD UMR 206, MNHN, 4 Place Jussieu, F-75005, Paris, France
| | - K Béneut
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), Sorbonne Universités-UPMC Univ. Paris 6, CNRS UMR 7590, IRD UMR 206, MNHN, 4 Place Jussieu, F-75005, Paris, France
| | - G Le Marchand
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), Sorbonne Universités-UPMC Univ. Paris 6, CNRS UMR 7590, IRD UMR 206, MNHN, 4 Place Jussieu, F-75005, Paris, France
| | - B Baptiste
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), Sorbonne Universités-UPMC Univ. Paris 6, CNRS UMR 7590, IRD UMR 206, MNHN, 4 Place Jussieu, F-75005, Paris, France
| | - P Dumas
- Synchrotron SOLEIL, Boîte Postale 48, 91192, Gif sur Yvette, France
| | - G Garbarino
- European Synchrotron Radiation Facility, Boîte Postale 2220, F-38043, Grenoble Cedex, France
| | - F Finocchi
- Institut des Nanosciences de Paris, Sorbonne Universités, UPMC Univ. Paris 6, CNRS UMR 7588, 4 Place Jussieu, F-75005, Paris, France
| | - J S Loveday
- SUPA, School of Physics Astronomy Centre for Science at Extreme Conditions, The University of Edinburgh, Edinburgh, EH9 3JZ, UK
| | - F Pietrucci
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), Sorbonne Universités-UPMC Univ. Paris 6, CNRS UMR 7590, IRD UMR 206, MNHN, 4 Place Jussieu, F-75005, Paris, France
| | - A M Saitta
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), Sorbonne Universités-UPMC Univ. Paris 6, CNRS UMR 7590, IRD UMR 206, MNHN, 4 Place Jussieu, F-75005, Paris, France
| | - F Datchi
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), Sorbonne Universités-UPMC Univ. Paris 6, CNRS UMR 7590, IRD UMR 206, MNHN, 4 Place Jussieu, F-75005, Paris, France.
| | - S Ninet
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), Sorbonne Universités-UPMC Univ. Paris 6, CNRS UMR 7590, IRD UMR 206, MNHN, 4 Place Jussieu, F-75005, Paris, France.
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39
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Flores-Livas JA, Sanna A, Graužinytė M, Davydov A, Goedecker S, Marques MAL. Emergence of superconductivity in doped H 2O ice at high pressure. Sci Rep 2017; 7:6825. [PMID: 28754909 PMCID: PMC5533783 DOI: 10.1038/s41598-017-07145-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 06/22/2017] [Indexed: 11/18/2022] Open
Abstract
We investigate the possibility of achieving high-temperature superconductivity in hydrides under pressure by inducing metallization of otherwise insulating phases through doping, a path previously used to render standard semiconductors superconducting at ambient pressure. Following this idea, we study H2O, one of the most abundant and well-studied substances, we identify nitrogen as the most likely and promising substitution/dopant. We show that for realistic levels of doping of a few percent, the phase X of ice becomes superconducting with a critical temperature of about 60 K at 150 GPa. In view of the vast number of hydrides that are strongly covalent bonded, but that remain insulating up to rather large pressures, our results open a series of new possibilities in the quest for novel high-temperature superconductors.
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Affiliation(s)
- José A Flores-Livas
- Department of Physics, Universität Basel, Klingelbergstr. 82, 4056, Basel, Switzerland.
| | - Antonio Sanna
- Max-Planck Institut of Microstructure Physics, Weinberg 2, 06120, Halle, Germany
| | - Miglė Graužinytė
- Department of Physics, Universität Basel, Klingelbergstr. 82, 4056, Basel, Switzerland
| | - Arkadiy Davydov
- Max-Planck Institut of Microstructure Physics, Weinberg 2, 06120, Halle, Germany
| | - Stefan Goedecker
- Department of Physics, Universität Basel, Klingelbergstr. 82, 4056, Basel, Switzerland
| | - Miguel A L Marques
- Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, D-06099, Halle, Germany
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40
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Chen B, Hoffmann R, Cammi R. Druckeffekte auf organische Reaktionen in Fluiden – eine neue theoretische Perspektive. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705427] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Bo Chen
- Department of Chemistry and Chemical Biology, Baker Laboratory Cornell University Ithaca NY 14853-1301 USA
| | - Roald Hoffmann
- Department of Chemistry and Chemical Biology, Baker Laboratory Cornell University Ithaca NY 14853-1301 USA
| | - Roberto Cammi
- Department of Chemical Science, Life Science and Environmental Sustainability University of Parma Viale Parco Area delle Scienze. 17/a Parma 43100 Italien
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41
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Chen B, Hoffmann R, Cammi R. The Effect of Pressure on Organic Reactions in Fluids—a New Theoretical Perspective. Angew Chem Int Ed Engl 2017; 56:11126-11142. [DOI: 10.1002/anie.201705427] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Bo Chen
- Department of Chemistry and Chemical Biology, Baker Laboratory Cornell University Ithaca NY 14853-1301 USA
| | - Roald Hoffmann
- Department of Chemistry and Chemical Biology, Baker Laboratory Cornell University Ithaca NY 14853-1301 USA
| | - Roberto Cammi
- Department of Chemical Science, Life Science and Environmental Sustainability University of Parma Viale Parco Area delle Scienze. 17/a Parma 43100 Italy
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42
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Tsuchiya J, Tsuchiya T. First principles calculation of the elasticity of ice VIII and X. J Chem Phys 2017; 146:014501. [PMID: 28063424 DOI: 10.1063/1.4973339] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The elastic constants of ice VIII and ice X phases under pressure have been determined at static 0 K conditions using first principles calculation. A step-like increase of the elastic constants of ice VIII phase occurred at 100-110 GPa due to hydrogen bond symmetrization. The elastic constants, and the pressure dependencies of these constants, of ice X and VIII are completely distinct. Due to these differences, these two phases can be distinguished on the basis of the elastic behavior. Conversely, the experimental elastic constant of C11 of ice VII gradually changes from an ice VIII like asymmetric hydrogen bond to a symmetric bond character within a wide pressure range. This finding suggests that the transition from ice VII to ice X starts around 30 GPa and completes at 110 GPa.
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Affiliation(s)
- Jun Tsuchiya
- Geodynamics Research Center, Ehime University, 2-5 Bunkyo-cho, Matsuyama 790-8577, Japan
| | - Taku Tsuchiya
- Geodynamics Research Center, Ehime University, 2-5 Bunkyo-cho, Matsuyama 790-8577, Japan
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43
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Yao SK, Zhang P, Zhang Y, Lu YB, Yang TL, Sun BG, Yuan ZY, Luo HW. Computing analysis of lattice vibrations of ice VIII. RSC Adv 2017. [DOI: 10.1039/c7ra05563c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We devise an approach to link inelastic neutron scattering with photon scattering experiments by computing simulation methods. The dynamic process of 33 normal modes of lattice vibration of Ice VIII are precisely illustrated based on CASTEP code.
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Affiliation(s)
- Shu-Kai Yao
- School of Space Science and Physics
- Shandong University
- Weihai
- China
| | - Peng Zhang
- School of Space Science and Physics
- Shandong University
- Weihai
- China
| | - Ying Zhang
- School of Physics and Technology
- University of Jinan
- Jinan
- China
| | - Ying-Bo Lu
- School of Space Science and Physics
- Shandong University
- Weihai
- China
| | - Tian-Lin Yang
- School of Space Science and Physics
- Shandong University
- Weihai
- China
| | - Bai-Gong Sun
- School of Space Science and Physics
- Shandong University
- Weihai
- China
| | - Zhen-Yu Yuan
- School of Space Science and Physics
- Shandong University
- Weihai
- China
| | - Hui-Wen Luo
- School of Space Science and Physics
- Shandong University
- Weihai
- China
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44
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Shen G, Mao HK. High-pressure studies with x-rays using diamond anvil cells. REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2017; 80:016101. [PMID: 27873767 DOI: 10.1088/1361-6633/80/1/016101] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Pressure profoundly alters all states of matter. The symbiotic development of ultrahigh-pressure diamond anvil cells, to compress samples to sustainable multi-megabar pressures; and synchrotron x-ray techniques, to probe materials' properties in situ, has enabled the exploration of rich high-pressure (HP) science. In this article, we first introduce the essential concept of diamond anvil cell technology, together with recent developments and its integration with other extreme environments. We then provide an overview of the latest developments in HP synchrotron techniques, their applications, and current problems, followed by a discussion of HP scientific studies using x-rays in the key multidisciplinary fields. These HP studies include: HP x-ray emission spectroscopy, which provides information on the filled electronic states of HP samples; HP x-ray Raman spectroscopy, which probes the HP chemical bonding changes of light elements; HP electronic inelastic x-ray scattering spectroscopy, which accesses high energy electronic phenomena, including electronic band structure, Fermi surface, excitons, plasmons, and their dispersions; HP resonant inelastic x-ray scattering spectroscopy, which probes shallow core excitations, multiplet structures, and spin-resolved electronic structure; HP nuclear resonant x-ray spectroscopy, which provides phonon densities of state and time-resolved Mössbauer information; HP x-ray imaging, which provides information on hierarchical structures, dynamic processes, and internal strains; HP x-ray diffraction, which determines the fundamental structures and densities of single-crystal, polycrystalline, nanocrystalline, and non-crystalline materials; and HP radial x-ray diffraction, which yields deviatoric, elastic and rheological information. Integrating these tools with hydrostatic or uniaxial pressure media, laser and resistive heating, and cryogenic cooling, has enabled investigations of the structural, vibrational, electronic, and magnetic properties of materials over a wide range of pressure-temperature conditions.
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Affiliation(s)
- Guoyin Shen
- Geophysical Laboratory, Carnegie Institution of Washington, Washington DC, USA
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45
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Strobel TA, Somayazulu M, Sinogeikin SV, Dera P, Hemley RJ. Hydrogen-Stuffed, Quartz-like Water Ice. J Am Chem Soc 2016; 138:13786-13789. [DOI: 10.1021/jacs.6b06986] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Timothy A. Strobel
- Geophysical
Laboratory, Carnegie Institution of Washington, Washington, D.C. 20015, United States
| | - Maddury Somayazulu
- Geophysical
Laboratory, Carnegie Institution of Washington, Washington, D.C. 20015, United States
| | - Stanislav V. Sinogeikin
- HPCAT,
Geophysical Laboratory, Carnegie Institution of Washington, Argonne, Illinois 60439, United States
| | - Przemyslaw Dera
- Hawaii
Institute of Geophysics and Planetology, School of Ocean and Earth
Science and Technology, University of Hawaii at Manoa, Honolulu, Hawaii 96822, United States
| | - Russell J. Hemley
- Department
of Civil and Environmental Engineering, George Washington University, Washington, D.C. 20052, United States
- Lawrence Livermore National Laboratory, Livermore, California 94550, United States
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46
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Zha CS, Tse JS, Bassett WA. New Raman measurements for H 2O ice VII in the range of 300 cm -1 to 4000 cm -1 at pressures up to 120 GPa. J Chem Phys 2016; 145:124315. [PMID: 27782667 DOI: 10.1063/1.4963320] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Raman spectroscopic measurements for H2O ice VII have been conducted to 120 GPa at 300 K in the spectroscopic range of 300-4000 cm-1. Both moissanite and diamond anvils were used for the experiments. This overcomes the problems of overlapping spectra between the diamond anvil and sample, which had prevented the observation of the stretching modes at pressures higher than ∼23 GPa in all previous measurements. The new results reveal many bands which have not been reported before. The pressure dependences of the Raman modes show anomalous changes at 13-15, ∼27, ∼44, ∼60, and 90 GPa, implying possible structural changes at these pressures. The new results demonstrate that the predicted symmetric hydrogen bond phase X transition does not occur below 120 GPa.
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Affiliation(s)
- Chang-Sheng Zha
- Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Rd. N.W., Washington, DC 20015, USA
| | - John S Tse
- Department of Physics, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5B2, Canada
| | - William A Bassett
- Department of Earth and Atmospheric Sciences, Cornell University, Ithaca, New York 14853, USA
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47
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Hernandez JA, Caracas R. Superionic-Superionic Phase Transitions in Body-Centered Cubic H_{2}O Ice. PHYSICAL REVIEW LETTERS 2016; 117:135503. [PMID: 27715129 DOI: 10.1103/physrevlett.117.135503] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2016] [Indexed: 06/06/2023]
Abstract
From first-principles molecular dynamics, we investigate the relation between the superionic proton conduction and the behavior of the O─H⋯O bond (ice VII^{'} to ice X transition) in body-centered-cubic (bcc) H_{2}O ice between 1300 and 2000 K and up to 300 GPa. We bring evidence that there are three distinct phases in the superionic bcc stability field. A first superionic phase characterized by extremely fast diffusion of highly delocalized protons (denoted VII^{''} hereinafter) is stable at low pressures. A first-order transition separates this phase from a superionic VII^{'}, characterized by a finite degree of localization of protons along the nonsymmetric O─H⋯O bonds. The transition is identified in structural, energetic, and elastic analysis. Upon further compression a second-order phase transition leads to the superionic ice X with symmetric O─H─O bonds.
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Affiliation(s)
- Jean-Alexis Hernandez
- Laboratoire de Géologie de Lyon, UMR CNRS 5276 (CNRS, ENS, Université Lyon1), École Normale Supérieure de Lyon, 69364 Lyon Cedex 07, France
| | - Razvan Caracas
- Laboratoire de Géologie de Lyon, UMR CNRS 5276 (CNRS, ENS, Université Lyon1), École Normale Supérieure de Lyon, 69364 Lyon Cedex 07, France
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48
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Noguchi N, Okuchi T. Self-diffusion of protons in H2O ice VII at high pressures: Anomaly around 10 GPa. J Chem Phys 2016; 144:234503. [DOI: 10.1063/1.4953688] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Affiliation(s)
- Naoki Noguchi
- Institute for Planetary Materials, Okayama University, Misasa, Tottori 682-0193, Japan
| | - Takuo Okuchi
- Institute for Planetary Materials, Okayama University, Misasa, Tottori 682-0193, Japan
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49
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Quantum hydrogen-bond symmetrization in the superconducting hydrogen sulfide system. Nature 2016; 532:81-4. [DOI: 10.1038/nature17175] [Citation(s) in RCA: 185] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2015] [Accepted: 01/20/2016] [Indexed: 11/08/2022]
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50
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