Formation of H2-rich iodine-hydrogen compounds at high pressure

被引：20

作者：

Binns, Jack ^{[1
]}

Dalladay-Simpson, Philip ^{[1
]}

Wang, Mengnan ^{[1
]}

Ackland, Graeme J. ^{[2
,3
]}

Gregoryanz, Eugene ^{[1
,2
,3
,4
]}

Howie, Ross T. ^{[1
]}

机构：

[1] Ctr High Pressure Sci Technol Adv Res, Shanghai, Peoples R China

[2] Univ Edinburgh, Ctr Sci Extreme Condit, Edinburgh EH9 3JZ, Midlothian, Scotland

[3] Univ Edinburgh, Sch Phys & Astron, Edinburgh EH9 3JZ, Midlothian, Scotland

[4] Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei, Anhui, Peoples R China

来源：

PHYSICAL REVIEW B | 2018年 / 97卷 / 02期

基金：

英国工程与自然科学研究理事会;

关键词：

METAL-ORGANIC FRAMEWORKS; X-RAY-DIFFRACTION; MOLECULAR DISSOCIATION; DENSE HYDROGEN; SOLID IODINE; STORAGE; PHASE; DEUTERIUM; SPECTRA; SYSTEM;

D O I：

10.1103/PhysRevB.97.024111

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页数：6

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