Journal
PHYSICAL REVIEW B
Volume 97, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.97.024111
Keywords
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Funding
- NSF of China [11404343]
- Natural Science Foundation of Anhui Province, China [1508085QA07]
- DOE-NNSA [DE-NA0001974]
- NSF
- DOE Office of Science by Argonne National Laboratory [DE-AC02-06CH11357]
- ERC grant, Hecate, a Royal Society Wolfson Award
- EPSRC [EP/P022790]
- EPSRC [EP/K01465X/1, EP/P022790/1] Funding Source: UKRI
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We have used synchrotron x-ray and Raman spectroscopic studies combined with molecular dynamics to investigate the I-2-H-2 system at high pressure. By laser heating the mixture above 25 GPa we synthesized the molecular compound HI(H-2)(13), with the AB(13) structure type and unusually high volumetric hydrogen content. The isolation of HI molecules by (H-2)(13) supramolecular clusters stabilizes the compound over a remarkable pressure range from 9 to at least 130 GPa. At lower pressures and 300 K another compound, hydrogen diiodane H-2(HI)(2), spontaneously forms, being stable up to 12.5 GPa.
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