1
|
Laniel D, Trybel F, Yin Y, Fedotenko T, Khandarkhaeva S, Aslandukov A, Aprilis G, Abrikosov AI, Bin Masood T, Giacobbe C, Bright EL, Glazyrin K, Hanfland M, Wright J, Hotz I, Abrikosov IA, Dubrovinsky L, Dubrovinskaia N. Aromatic hexazine [N 6] 4- anion featured in the complex structure of the high-pressure potassium nitrogen compound K 9N 56. Nat Chem 2023; 15:641-646. [PMID: 36879075 DOI: 10.1038/s41557-023-01148-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 01/26/2023] [Indexed: 03/08/2023]
Abstract
The recent high-pressure synthesis of pentazolates and the subsequent stabilization of the aromatic [N5]- anion at atmospheric pressure have had an immense impact on nitrogen chemistry. Other aromatic nitrogen species have also been actively sought, including the hexaazabenzene N6 ring. Although a variety of configurations and geometries have been proposed based on ab initio calculations, one that stands out as a likely candidate is the aromatic hexazine anion [N6]4-. Here we present the synthesis of this species, realized in the high-pressure potassium nitrogen compound K9N56 formed at high pressures (46 and 61 GPa) and high temperature (estimated to be above 2,000 K) by direct reaction between nitrogen and KN3 in a laser-heated diamond anvil cell. The complex structure of K9N56-composed of 520 atoms per unit cell-was solved based on synchrotron single-crystal X-ray diffraction and corroborated by density functional theory calculations. The observed hexazine anion [N6]4- is planar and proposed to be aromatic.
Collapse
Affiliation(s)
- Dominique Laniel
- Material Physics and Technology at Extreme Conditions, Laboratory of Crystallography, University of Bayreuth, Bayreuth, Germany. .,Centre for Science at Extreme Conditions and School of Physics and Astronomy, University of Edinburgh, Edinburgh, UK.
| | - Florian Trybel
- Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping, Sweden
| | - Yuqing Yin
- Material Physics and Technology at Extreme Conditions, Laboratory of Crystallography, University of Bayreuth, Bayreuth, Germany.,State Key Laboratory of Crystal Materials, Shandong University, Jinan, China
| | - Timofey Fedotenko
- Material Physics and Technology at Extreme Conditions, Laboratory of Crystallography, University of Bayreuth, Bayreuth, Germany
| | | | - Andrey Aslandukov
- Material Physics and Technology at Extreme Conditions, Laboratory of Crystallography, University of Bayreuth, Bayreuth, Germany
| | | | - Alexei I Abrikosov
- Department of Science and Technology (ITN), Linköping University, Norrköping, Sweden
| | - Talha Bin Masood
- Department of Science and Technology (ITN), Linköping University, Norrköping, Sweden
| | | | | | | | | | | | - Ingrid Hotz
- Department of Science and Technology (ITN), Linköping University, Norrköping, Sweden
| | - Igor A Abrikosov
- Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping, Sweden
| | - Leonid Dubrovinsky
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, China
| | - Natalia Dubrovinskaia
- Material Physics and Technology at Extreme Conditions, Laboratory of Crystallography, University of Bayreuth, Bayreuth, Germany.,Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping, Sweden
| |
Collapse
|
2
|
Li X, Su H, Liang W, Zhou W, Rahman A, Xu Z, Zhong C, Mai D, Dai R, Gou H, Wang Z, Zheng X, Wu Q, Zhang Z. Inference of a "Hot Ice" Layer in Nitrogen-Rich Planets: Demixing the Phase Diagram and Phase Composition for Variable Concentration Helium-Nitrogen Mixtures Based on Isothermal Compression. J Phys Chem A 2022; 126:3745-3757. [PMID: 35648656 DOI: 10.1021/acs.jpca.2c02132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Van der Waals (vdW) chemistry in simple molecular systems may be important for understanding the structure and properties of the interiors of the outer planets and their satellites, where pressures are high and such components may be abundant. In the current study, Raman spectra and visual observation are employed to investigate the phase separation and composition determination for helium-nitrogen mixtures with helium concentrations from 20 to 95% along the 295 K isothermal compression. Fluid-fluid-solid triple-phase equilibrium and several equilibria of two phases including fluid-fluid and fluid-solid have been observed in different helium-nitrogen mixtures upon loading or unloading pressure. The homogeneous fluid in helium-nitrogen mixtures separates into a helium-rich fluid (F1) and a nitrogen-rich fluid (F2) with increasing pressure. The triple-phase point occurs at 295 K and 8.8 GPa for a solid-phase (N2)11He vdW compound, fluid F1 with around 50% helium, and fluid F2 with 95% helium. Helium concentrations of F1 coexisted with the (N2)11He vdW compound or δ-N2 in helium-nitrogen mixtures with different helium concentrations between 40 and 50% and between 20 and 40%, respectively. In addition, the helium concentration of F2 is the same in helium-nitrogen mixtures with different helium concentrations and decreases upon loading pressure. Pressure-induced nitrogen molecule ordering at 32.6 GPa and a structural phase transition at 110 GPa are observed in (N2)11He. In addition, at 187 GPa, a pressure-induced transition to an amorphous state is identified.
Collapse
Affiliation(s)
- Xiangdong Li
- Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Hao Su
- Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Wentao Liang
- Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Wenju Zhou
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, China
| | - Azizur Rahman
- Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Zilong Xu
- Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Cheng Zhong
- Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Di Mai
- Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Rucheng Dai
- The Centre for Physical Experiments, University of Science and Technology of China, Hefei, Anhui 230026, China.,Frontiers Science Center for Planetary Exploration and Emerging Technologies, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Huiyang Gou
- Center for High Pressure Science and Technology Advanced Research, Beijing 100094, China
| | - Zhongping Wang
- The Centre for Physical Experiments, University of Science and Technology of China, Hefei, Anhui 230026, China.,Frontiers Science Center for Planetary Exploration and Emerging Technologies, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xianxu Zheng
- Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, Sichuan 360001, China
| | - Qiang Wu
- Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, Sichuan 360001, China
| | - Zengming Zhang
- The Centre for Physical Experiments, University of Science and Technology of China, Hefei, Anhui 230026, China.,Frontiers Science Center for Planetary Exploration and Emerging Technologies, University of Science and Technology of China, Hefei, Anhui 230026, China
| |
Collapse
|
3
|
Ranieri U, Conway LJ, Donnelly ME, Hu H, Wang M, Dalladay-Simpson P, Peña-Alvarez M, Gregoryanz E, Hermann A, Howie RT. Formation and Stability of Dense Methane-Hydrogen Compounds. PHYSICAL REVIEW LETTERS 2022; 128:215702. [PMID: 35687440 DOI: 10.1103/physrevlett.128.215702] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 02/02/2022] [Accepted: 04/20/2022] [Indexed: 06/15/2023]
Abstract
Through a series of x-ray diffraction, optical spectroscopy diamond anvil cell experiments, combined with density functional theory calculations, we explore the dense CH_{4}-H_{2} system. We find that pressures as low as 4.8 GPa can stabilize CH_{4}(H_{2})_{2} and (CH_{4})_{2}H_{2}, with the latter exhibiting extreme hardening of the intramolecular vibrational mode of H_{2} units within the structure. On further compression, a unique structural composition, (CH_{4})_{3}(H_{2})_{25}, emerges. This novel structure holds a vast amount of molecular hydrogen and represents the first compound to surpass 50 wt % H_{2}. These compounds, stabilized by nuclear quantum effects, persist over a broad pressure regime, exceeding 160 GPa.
Collapse
Affiliation(s)
- Umbertoluca Ranieri
- Center for High Pressure Science and Technology Advanced Research, 1690 Cailun Road, Shanghai, 201203, China
- Dipartimento di Fisica, Università di Roma La Sapienza, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Lewis J Conway
- Centre for Science at Extreme Conditions and The School of Physics and Astronomy, The University of Edinburgh, Peter Guthrie Tait Road, Edinburgh, United Kingdom
| | - Mary-Ellen Donnelly
- Center for High Pressure Science and Technology Advanced Research, 1690 Cailun Road, Shanghai, 201203, China
| | - Huixin Hu
- Center for High Pressure Science and Technology Advanced Research, 1690 Cailun Road, Shanghai, 201203, China
| | - Mengnan Wang
- Center for High Pressure Science and Technology Advanced Research, 1690 Cailun Road, Shanghai, 201203, China
| | - Philip Dalladay-Simpson
- Center for High Pressure Science and Technology Advanced Research, 1690 Cailun Road, Shanghai, 201203, China
| | - Miriam Peña-Alvarez
- Centre for Science at Extreme Conditions and The School of Physics and Astronomy, The University of Edinburgh, Peter Guthrie Tait Road, Edinburgh, United Kingdom
| | - Eugene Gregoryanz
- Center for High Pressure Science and Technology Advanced Research, 1690 Cailun Road, Shanghai, 201203, China
- Centre for Science at Extreme Conditions and The School of Physics and Astronomy, The University of Edinburgh, Peter Guthrie Tait Road, Edinburgh, United Kingdom
- Key Laboratory of Materials Physics, Institute of Solid State Physics, CAS, Hefei, China
| | - Andreas Hermann
- Centre for Science at Extreme Conditions and The School of Physics and Astronomy, The University of Edinburgh, Peter Guthrie Tait Road, Edinburgh, United Kingdom
| | - Ross T Howie
- Center for High Pressure Science and Technology Advanced Research, 1690 Cailun Road, Shanghai, 201203, China
- Centre for Science at Extreme Conditions and The School of Physics and Astronomy, The University of Edinburgh, Peter Guthrie Tait Road, Edinburgh, United Kingdom
| |
Collapse
|
4
|
Thermophysical properties of helium and hydrogen mixtures under high pressure predicted by ab-initio calculations: Implications for Saturn and Jupiter planets. Chem Phys 2022. [DOI: 10.1016/j.chemphys.2021.111430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
5
|
Ceppatelli M, Scelta D, Serrano-Ruiz M, Dziubek K, Garbarino G, Jacobs J, Mezouar M, Bini R, Peruzzini M. High pressure synthesis of phosphine from the elements and the discovery of the missing (PH 3) 2H 2 tile. Nat Commun 2020; 11:6125. [PMID: 33257669 PMCID: PMC7705733 DOI: 10.1038/s41467-020-19745-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 10/14/2020] [Indexed: 11/09/2022] Open
Abstract
High pressure reactivity of phosphorus and hydrogen is relevant to fundamental chemistry, energy conversion and storage, and materials science. Here we report the synthesis of (PH3)2H2, a crystalline van der Waals (vdW) compound (I4cm) made of PH3 and H2 molecules, in a Diamond Anvil Cell by direct catalyst-free high pressure (1.2 GPa) and high temperature (T ≲ 1000 K) chemical reaction of black phosphorus and liquid hydrogen, followed by room T compression above 3.5 GPa. Group 15 elements were previously not known to form H2-containing vdW compounds of their molecular hydrides. The observation of (PH3)2H2, identified by synchrotron X-ray diffraction and vibrational spectroscopy (FTIR, Raman), therefore represents the discovery of a previously missing tile, specifically corresponding to P for pnictogens, in the ability of non-metallic elements to form such compounds. Significant chemical implications encompass reactivity of the elements under extreme conditions, with the observation of the P analogue of the Haber-Bosch reaction for N, fundamental bond theory, and predicted high pressure superconductivity in P-H systems.
Collapse
Affiliation(s)
- Matteo Ceppatelli
- LENS, European Laboratory for Non-linear Spectroscopy, Via N. Carrara 1, I-50019, Firenze, Sesto Fiorentino, Italy.
- ICCOM-CNR, Institute of Chemistry of OrganoMetallic Compounds, National Research Council of Italy, Via Madonna del Piano 10, I-50019, Firenze, Sesto Fiorentino, Italy.
| | - Demetrio Scelta
- LENS, European Laboratory for Non-linear Spectroscopy, Via N. Carrara 1, I-50019, Firenze, Sesto Fiorentino, Italy
- ICCOM-CNR, Institute of Chemistry of OrganoMetallic Compounds, National Research Council of Italy, Via Madonna del Piano 10, I-50019, Firenze, Sesto Fiorentino, Italy
| | - Manuel Serrano-Ruiz
- ICCOM-CNR, Institute of Chemistry of OrganoMetallic Compounds, National Research Council of Italy, Via Madonna del Piano 10, I-50019, Firenze, Sesto Fiorentino, Italy
| | - Kamil Dziubek
- LENS, European Laboratory for Non-linear Spectroscopy, Via N. Carrara 1, I-50019, Firenze, Sesto Fiorentino, Italy
- ICCOM-CNR, Institute of Chemistry of OrganoMetallic Compounds, National Research Council of Italy, Via Madonna del Piano 10, I-50019, Firenze, Sesto Fiorentino, Italy
| | - Gaston Garbarino
- ESRF, European Synchrotron Radiation Facility, 71 Avenue des Martyrs, 38000, Grenoble, France
| | - Jeroen Jacobs
- ESRF, European Synchrotron Radiation Facility, 71 Avenue des Martyrs, 38000, Grenoble, France
| | - Mohamed Mezouar
- ESRF, European Synchrotron Radiation Facility, 71 Avenue des Martyrs, 38000, Grenoble, France
| | - Roberto Bini
- LENS, European Laboratory for Non-linear Spectroscopy, Via N. Carrara 1, I-50019, Firenze, Sesto Fiorentino, Italy
- ICCOM-CNR, Institute of Chemistry of OrganoMetallic Compounds, National Research Council of Italy, Via Madonna del Piano 10, I-50019, Firenze, Sesto Fiorentino, Italy
- Dipartimento di Chimica "Ugo Schiff" dell'Università degli Studi di Firenze, Via della Lastruccia 3, I-50019, Firenze, Sesto Fiorentino, Italy
| | - Maurizio Peruzzini
- ICCOM-CNR, Institute of Chemistry of OrganoMetallic Compounds, National Research Council of Italy, Via Madonna del Piano 10, I-50019, Firenze, Sesto Fiorentino, Italy
| |
Collapse
|
6
|
Zhang G, Zhang H, Ninet S, Zhu H, Beneut K, Liu C, Mezouar M, Gao C, Datchi F. Transformation of Ammonium Azide at High Pressure and Temperature. MATERIALS 2020; 13:ma13184102. [PMID: 32942780 PMCID: PMC7560398 DOI: 10.3390/ma13184102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 09/06/2020] [Accepted: 09/11/2020] [Indexed: 11/16/2022]
Abstract
The compression of ammonium azide (AA) has been considered to be a promising route for producing high energy-density polynitrogen compounds. So far though, there is no experimental evidence that pure AA can be transformed into polynitrogen materials under high pressure at room temperature. We report here on high pressure (P) and temperature (T) experiments on AA embedded in N2 and on pure AA in the range 0-30 GPa, 300-700 K. The decomposition of AA into N2 and NH3 was observed in liquid N2 around 15 GPa-700 K. For pressures above 20 GPa, our results show that AA in N2 transforms into a new crystalline compound and solid ammonia when heated above 620 K. This compound is stable at room temperature and on decompression down to at least 7.0 GPa. Pure AA also transforms into a new compound at similar P-T conditions, but the product is different. The newly observed phases are studied by Raman spectroscopy and X-ray diffraction and compared to nitrogen and hydronitrogen compounds that have been predicted in the literature. While there is no exact match with any of them, similar vibrational features are found between the product that was obtained in AA + N2 with a polymeric compound of N9H formula.
Collapse
Affiliation(s)
- Guozhao Zhang
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China;
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), Sorbonne Université, CNRS UMR 7590, MNHN, 4 Place Jussieu, F-75005 Paris, France; (H.Z.); (S.N.); (K.B.)
| | - Haiwa Zhang
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), Sorbonne Université, CNRS UMR 7590, MNHN, 4 Place Jussieu, F-75005 Paris, France; (H.Z.); (S.N.); (K.B.)
| | - Sandra Ninet
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), Sorbonne Université, CNRS UMR 7590, MNHN, 4 Place Jussieu, F-75005 Paris, France; (H.Z.); (S.N.); (K.B.)
| | - Hongyang Zhu
- School of Physics and Electronic Engineering, Linyi University, Linyi 276005, China;
| | - Keevin Beneut
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), Sorbonne Université, CNRS UMR 7590, MNHN, 4 Place Jussieu, F-75005 Paris, France; (H.Z.); (S.N.); (K.B.)
| | - Cailong Liu
- Shandong Key Laboratory of Optical Communication Science and Technology, School of Physical Science and Information Technology of Liaocheng University, Liaocheng 252059, China;
| | - Mohamed Mezouar
- European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble CEDEX, France;
| | - Chunxiao Gao
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China;
- Correspondence: (C.G.); (F.D.)
| | - Frédéric Datchi
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), Sorbonne Université, CNRS UMR 7590, MNHN, 4 Place Jussieu, F-75005 Paris, France; (H.Z.); (S.N.); (K.B.)
- Correspondence: (C.G.); (F.D.)
| |
Collapse
|
7
|
Guńka PA, Zhu L, Strobel TA, Zachara J. Raman studies of hydrogen trapped in As 4O 6·2H 2 at high pressure and low temperature. J Chem Phys 2020; 153:054501. [PMID: 32770879 DOI: 10.1063/5.0017892] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Raman spectroscopic measurements of the arsenolite-hydrogen inclusion compound As4O6·2H2 were performed in diamond anvil cells at high pressure and variable temperature down to 80 K. The experimental results were complemented by ab initio molecular dynamics simulations and phonon calculations. Observation of three hydrogen vibrons in As4O6·2H2 is reported in the entire temperature and pressure range studied (up to 24 GPa). While the experiments performed with protium and deuterium at variable temperatures allowed for the assignment of two vibrons as Q1(1) and Q1(0) transitions of ortho and para spin isomers of hydrogen trapped in the inclusion compound, the origin of the third vibron could not be unequivocally established. Low-temperature spectra revealed that the lowest-frequency vibron is actually composed of two overlapping bands of Ag and T2g symmetries dominated by H2 stretching modes as predicted by our previous density functional theory calculations. We observed low-frequency modes of As4O6·2H2 vibrations dominated by H2 "librations," which were missed in a previous study. A low-temperature fine structure was observed for the J = 0 → 2 and J = 1 → 3 manifolds of hydrogen trapped in As4O6·2H2, indicating the lifting of degeneracy due to an anisotropic environment. A non-spherical distribution was captured by molecular dynamics simulations, which revealed that the trajectory of H2 molecules is skewed along the crystallographic ⟨111⟩ direction. Last but not least, low-temperature synchrotron powder x-ray diffraction measurements on As4O6·2H2 revealed that the bulk structure of the compound is preserved down to 5 K at 1.6 GPa.
Collapse
Affiliation(s)
- Piotr A Guńka
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warszawa, Poland
| | - Li Zhu
- Earth and Planets Laboratory, Carnegie Institution for Science, 5251 Broad Branch Road NW, Washington, DC 20015, USA
| | - Timothy A Strobel
- Earth and Planets Laboratory, Carnegie Institution for Science, 5251 Broad Branch Road NW, Washington, DC 20015, USA
| | - Janusz Zachara
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warszawa, Poland
| |
Collapse
|
8
|
Shi J, Cui W, Hao J, Xu M, Wang X, Li Y. Formation of ammonia-helium compounds at high pressure. Nat Commun 2020; 11:3164. [PMID: 32572021 PMCID: PMC7308345 DOI: 10.1038/s41467-020-16835-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 05/28/2020] [Indexed: 11/09/2022] Open
Abstract
Uranus and Neptune are generally assumed to have helium only in their gaseous atmospheres. Here, we report the possibility of helium being fixed in the upper mantles of these planets in the form of NH3-He compounds. Structure predictions reveal two energetically stable NH3-He compounds with stoichiometries (NH3)2He and NH3He at high pressures. At low temperatures, (NH3)2He is ionic with NH3 molecules partially dissociating into (NH2)- and (NH4)+ ions. Simulations show that (NH3)2He transforms into intermediate phase at 100 GPa and 1000 K with H atoms slightly vibrate around N atoms, and then to a superionic phase at ~2000 K with H and He exhibiting liquid behavior within the fixed N sublattice. Finally, (NH3)2He becomes a fluid phase at temperatures of 3000 K. The stability of (NH3)2He at high pressure and temperature could contribute to update models of the interiors of Uranus and Neptune.
Collapse
Affiliation(s)
- Jingming Shi
- Laboratory of Quantum Materials Design and Application, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, 221116, China
| | - Wenwen Cui
- Laboratory of Quantum Materials Design and Application, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, 221116, China
| | - Jian Hao
- Laboratory of Quantum Materials Design and Application, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, 221116, China.,Jiangsu Key Laboratory of Advanced Laser Materials and Devices, Jiangsu Normal University, Xuzhou, 221116, China
| | - Meiling Xu
- Laboratory of Quantum Materials Design and Application, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, 221116, China
| | - Xianlong Wang
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031, China.
| | - Yinwei Li
- Laboratory of Quantum Materials Design and Application, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, 221116, China.
| |
Collapse
|
9
|
Jiang X, Zheng Y, Xue XX, Dai J, Feng Y. Ab initio study of the miscibility for solid hydrogen-helium mixtures at high pressure. J Chem Phys 2020; 152:074701. [PMID: 32087670 DOI: 10.1063/1.5138253] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Understanding the behavior of H2-He binary mixtures at high pressure is of great importance. Two more recent experiments [J. Lim and C. S. Yoo, Phys. Rev. Lett. 120, 165301 (2018) and R. Turnbull et al., ibid. 121, 195702 (2018)] are in conflict, regarding the miscibility between H2 and He in solids at high pressure. On the basis of first-principles calculations combined with the structure prediction method, we investigate the miscibility for solid H2-He mixtures at pressures from 0 GPa to 200 GPa. It is found that there is no sign of miscibility and chemical reactivity in H2-He mixtures with any H:He ratio. Moreover, instead of H2-He mixtures, the calculated Raman modes of the N-H mixtures can better explain the characteristic peaks observed experimentally, which were claimed to be the H-He vibrational modes. These calculation results are more in line with the experimental findings by Turnbull et al. [Phys. Rev. Lett. 121, 195702 (2018)].
Collapse
Affiliation(s)
- Xingxing Jiang
- Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Yueshao Zheng
- Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Xiong-Xiong Xue
- Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan University, Changsha 410082, China
| | - Jiayu Dai
- Department of Physics, National University of Defense Technology, Changsha 410073, China
| | - Yexin Feng
- Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan University, Changsha 410082, China
| |
Collapse
|
10
|
Tse JS. A chemical perspective on high pressure crystal structures and properties. Natl Sci Rev 2020; 7:149-169. [PMID: 34692029 PMCID: PMC8289026 DOI: 10.1093/nsr/nwz144] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 07/25/2019] [Accepted: 08/20/2019] [Indexed: 11/13/2022] Open
Abstract
The general availability of third generation synchrotron sources has ushered in a new era of high pressure research. The crystal structure of materials under compression can now be determined by X-ray diffraction using powder samples and, more recently, from multi-nano single crystal diffraction. Concurrently, these experimental advancements are accompanied by a rapid increase in computational capacity and capability, enabling the application of sophisticated quantum calculations to explore a variety of material properties. One of the early surprises is the finding that simple metallic elements do not conform to the general expectation of adopting 3D close-pack structures at high pressure. Instead, many novel open structures have been identified with no known analogues at ambient pressure. The occurrence of these structural types appears to be random with no rules governing their formation. The adoption of an open structure at high pressure suggested the presence of directional bonds. Therefore, a localized atomic hybrid orbital description of the chemical bonding may be appropriate. Here, the theoretical foundation and experimental evidence supporting this approach to the elucidation of the high pressure crystal structures of group I and II elements and polyhydrides are reviewed. It is desirable and advantageous to extend and apply established chemical principles to the study of the chemistry and chemical bonding of materials at high pressure.
Collapse
Affiliation(s)
- John S Tse
- Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5E2, Canada
| |
Collapse
|
11
|
Wang Y, Zhang X, Jiang S, Geballe ZM, Pakornchote T, Somayazulu M, Prakapenka VB, Greenberg E, Goncharov AF. Helium-hydrogen immiscibility at high pressures. J Chem Phys 2019; 150:114504. [DOI: 10.1063/1.5086270] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Affiliation(s)
- Yu Wang
- Key Laboratory of Materials Physics and Center for Energy Matter in Extreme Environments, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
- University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
| | - Xiao Zhang
- Key Laboratory of Materials Physics and Center for Energy Matter in Extreme Environments, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
- University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
| | - Shuqing Jiang
- Key Laboratory of Materials Physics and Center for Energy Matter in Extreme Environments, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
| | - Zachary M. Geballe
- Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Road, Washington, District of Columbia 20015, USA
| | - Teerachote Pakornchote
- Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Road, Washington, District of Columbia 20015, USA
- Department of Physics, Chulalongkorn University, Bangkok 10330, Thailand
| | - Maddury Somayazulu
- Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Road, Washington, District of Columbia 20015, USA
| | - Vitali B. Prakapenka
- Center for Advanced Radiations Sources, University of Chicago, Chicago, Illinois 60637, USA
| | - Eran Greenberg
- Center for Advanced Radiations Sources, University of Chicago, Chicago, Illinois 60637, USA
| | - Alexander F. Goncharov
- Key Laboratory of Materials Physics and Center for Energy Matter in Extreme Environments, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, Anhui 230031, China
- University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
- Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Road, Washington, District of Columbia 20015, USA
| |
Collapse
|
12
|
Turnbull R, Donnelly ME, Wang M, Peña-Alvarez M, Ji C, Dalladay-Simpson P, Mao HK, Gregoryanz E, Howie RT. Reactivity of Hydrogen-Helium and Hydrogen-Nitrogen Mixtures at High Pressures. PHYSICAL REVIEW LETTERS 2018; 121:195702. [PMID: 30468616 DOI: 10.1103/physrevlett.121.195702] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 08/17/2018] [Indexed: 06/09/2023]
Abstract
Through a series of Raman spectroscopy studies, we investigate the behavior of hydrogen-helium and hydrogen-nitrogen mixtures at high pressure across a wide range of concentrations. We find that there is no evidence of chemical association or increased miscibility of hydrogen and helium in the solid state up to pressures of 250 GPa at 300 K. In contrast, we observe the formation of concentration-dependent N_{2}-H_{2} van der Waals solids, which react to form N-H bonded compounds above 50 GPa. Through this combined study, we can demonstrate that the recently reported chemical association of H_{2}-He can be attributed to significant N_{2} contamination and subsequent formation of N_{2}-H_{2} compounds.
Collapse
Affiliation(s)
- Robin Turnbull
- School of Physics and Astronomy and Centre for Science at Extreme Conditions, University of Edinburgh, Edinburgh EH9 3FD, United Kingdom
| | - Mary-Ellen Donnelly
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, People's Republic of China
| | - Mengnan Wang
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, People's Republic of China
| | - Miriam Peña-Alvarez
- School of Physics and Astronomy and Centre for Science at Extreme Conditions, University of Edinburgh, Edinburgh EH9 3FD, United Kingdom
| | - Cheng Ji
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, People's Republic of China
- High Pressure Collaborative Access Team, Geophysical Laboratory, Carnegie Institution of Washington, Argonne, Illinois 60439, USA
| | - Philip Dalladay-Simpson
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, People's Republic of China
| | - Ho-Kwang Mao
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, People's Republic of China
| | - Eugene Gregoryanz
- School of Physics and Astronomy and Centre for Science at Extreme Conditions, University of Edinburgh, Edinburgh EH9 3FD, United Kingdom
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, People's Republic of China
| | - Ross T Howie
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, People's Republic of China
| |
Collapse
|