Low-temperature reflection/absorption IR study of thin films of nitric acid hydrates and ammonium nitrate adsorbed on gold foil

被引：33

作者：

Koch, TG ^{[1
]}

Holmes, NS ^{[1
]}

Roddis, TB ^{[1
]}

Sodeau, JR ^{[1
]}

机构：

[1] UNIV E ANGLIA,SCH CHEM SCI,NORWICH NR4 7TJ,NORFOLK,ENGLAND

来源：

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1996年 / 92卷 / 23期

关键词：

D O I：

10.1039/ft9969204787

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：

Grazing angle reflection/absorption FTIR spectroscopy has been employed to characterise thin layers of nitric acid hydrates and ammonium nitrate in a high-vacuum system. Ordered films of frozen nitric acid di- and tri-hydrate were produced by slow effusive vapour deposition onto a polycrystalline gold foil at 80 K followed by annealing to 190 K. On the basis of the metal surface selection rule, analysis of the observed IR band intensities suggests that the nitrate and oxonium ions align preferentially with their C-3 axes parallel to each other and perpendicular to the underlying substrate. A similar orientation was observed for the nitrate ions of thin ammonium nitrate films.

引用

页码：4787 / 4792

页数：6

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