A second distinct structural "state" of high-density amorphous ice at 77 K and 1 bar

被引：295

作者：

Loerting, T ^{[1
]}

Salzmann, C ^{[1
]}

Kohl, I ^{[1
]}

Mayer, E ^{[1
]}

Hallbrucker, A ^{[1
]}

机构：

[1] Univ Innsbruck, Inst Allgemeine Anorgan & Theoret Chem, A-6020 Innsbruck, Austria

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2001年 / 3卷 / 24期

关键词：

D O I：

10.1039/b108676f

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

High-density amorphous ice (HDA), further densified on isobaric heating from 77 K to 165 (177) K at 1.1 (1.9) GPa, relaxes at 77 K and 1 bar to the same structural "state" with a density of 1.25 +/- 0.41 g cm(-3). Its density is higher by approximate to9% than that of HDA, and thus it is called very-high-density amorphous ice (VHDA). X-ray diffractogram and Raman spectrum of VHDA clearly differs from that of HDA, and the hydrogen-bonded O-O distance increases from 2.82 Angstrom in HDA to 2.85 Angstrom in VHDA. Implications for the polyamorphism of the amorphous forms of water are discussed.

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页码：5355 / 5357

页数：3

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