Ultraviolet absorption of cis-cis and trans-perp peroxynitrous acid (HOONO) in solid argon

Wen Jui Lo*, Yuan-Pern Lee

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Two conformers (cis-cis and trans-perp) of peroxynitrous acid (HOONO) were produced from in situ photolysis of an argon matrix containing nitric acid (HONO2) at 12 K by means of an ArF excimer laser. Photoconversion between various isomers of HNO3 was achieved by irradiation of the matrix with laser emission at different wavelengths; with the aid of the observed relative intensities of IR absorption lines of each species, the UV absorption spectra of cis-cis and trans-perp HOONO were determined. The maximum absorptions, about 220 and 275 nm for trans-perp and cis-cis HOONO, respectively, are consistent with results of IR absorption recorded after irradiation of the matrix with excimer lasers at 193, 220, 248 and 308 nm.

Original languageEnglish
Pages (from-to)357-361
Number of pages5
JournalChemical Physics Letters
Volume229
Issue number4-5
DOIs
StatePublished - 4 Nov 1994

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