Infrared absorption of cis-cis peroxynitrous acid (HOONO) in solid argon

Wen Jui Lo; Yuan-Pern Lee

doi:10.1063/1.467338

Infrared absorption of cis-cis peroxynitrous acid (HOONO) in solid argon

Wen Jui Lo^*, Yuan-Pern Lee

^*Corresponding author for this work

Department of Applied Chemistry

Research output: Contribution to journal › Article › peer-review

62 Scopus citations

Abstract

Nitric acid (HONO₂) isolated in solid argon at 12 K was irradiated with 193 nm emission from an ArF excimer laser. Recombination of the photofragments led to formation of peroxynitrous acid (HOONO) in various conformers. In addition to previously reported lines due to trans-perp HOONO, lines at 3285.4, 1600.3, 1395.0, 927.2, 794.3, and 629.1 cm^-1 were observed; they are assigned to cis-cis HOONO having a five-membered hydrogen-bonded ring. The observed vibrational frequencies and the corresponding isotopic shifts of both conformers are in agreement with recent theoretical calculations. Cis-cis HOONO was photolyzed much more rapidly than trans-perp HOONO upon irradiation at 308 nm with a XeCl laser. Lines due to a HO ₂⋯NO complex were also observed; they disappeared upon irradiation with the globar source of the infrared spectrometer. The mechanism of formation of various conformers of HOONO is discussed.

Original language	English
Pages (from-to)	5494-5499
Number of pages	6
Journal	The Journal of chemical physics
Volume	101
Issue number	7
DOIs	https://doi.org/10.1063/1.467338
State	Published - 1 Oct 1994

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@article{3c034a3e0ffd4bd1a7aa1642f6dbe7b4,

title = "Infrared absorption of cis-cis peroxynitrous acid (HOONO) in solid argon",

abstract = "Nitric acid (HONO2) isolated in solid argon at 12 K was irradiated with 193 nm emission from an ArF excimer laser. Recombination of the photofragments led to formation of peroxynitrous acid (HOONO) in various conformers. In addition to previously reported lines due to trans-perp HOONO, lines at 3285.4, 1600.3, 1395.0, 927.2, 794.3, and 629.1 cm-1 were observed; they are assigned to cis-cis HOONO having a five-membered hydrogen-bonded ring. The observed vibrational frequencies and the corresponding isotopic shifts of both conformers are in agreement with recent theoretical calculations. Cis-cis HOONO was photolyzed much more rapidly than trans-perp HOONO upon irradiation at 308 nm with a XeCl laser. Lines due to a HO 2⋯NO complex were also observed; they disappeared upon irradiation with the globar source of the infrared spectrometer. The mechanism of formation of various conformers of HOONO is discussed.",

author = "Lo, {Wen Jui} and Yuan-Pern Lee",

year = "1994",

month = oct,

day = "1",

doi = "10.1063/1.467338",

language = "English",

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pages = "5494--5499",

journal = "The Journal of chemical physics",

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publisher = "American Institute of Physics",

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TY - JOUR

T1 - Infrared absorption of cis-cis peroxynitrous acid (HOONO) in solid argon

AU - Lo, Wen Jui

AU - Lee, Yuan-Pern

PY - 1994/10/1

Y1 - 1994/10/1

N2 - Nitric acid (HONO2) isolated in solid argon at 12 K was irradiated with 193 nm emission from an ArF excimer laser. Recombination of the photofragments led to formation of peroxynitrous acid (HOONO) in various conformers. In addition to previously reported lines due to trans-perp HOONO, lines at 3285.4, 1600.3, 1395.0, 927.2, 794.3, and 629.1 cm-1 were observed; they are assigned to cis-cis HOONO having a five-membered hydrogen-bonded ring. The observed vibrational frequencies and the corresponding isotopic shifts of both conformers are in agreement with recent theoretical calculations. Cis-cis HOONO was photolyzed much more rapidly than trans-perp HOONO upon irradiation at 308 nm with a XeCl laser. Lines due to a HO 2⋯NO complex were also observed; they disappeared upon irradiation with the globar source of the infrared spectrometer. The mechanism of formation of various conformers of HOONO is discussed.

AB - Nitric acid (HONO2) isolated in solid argon at 12 K was irradiated with 193 nm emission from an ArF excimer laser. Recombination of the photofragments led to formation of peroxynitrous acid (HOONO) in various conformers. In addition to previously reported lines due to trans-perp HOONO, lines at 3285.4, 1600.3, 1395.0, 927.2, 794.3, and 629.1 cm-1 were observed; they are assigned to cis-cis HOONO having a five-membered hydrogen-bonded ring. The observed vibrational frequencies and the corresponding isotopic shifts of both conformers are in agreement with recent theoretical calculations. Cis-cis HOONO was photolyzed much more rapidly than trans-perp HOONO upon irradiation at 308 nm with a XeCl laser. Lines due to a HO 2⋯NO complex were also observed; they disappeared upon irradiation with the globar source of the infrared spectrometer. The mechanism of formation of various conformers of HOONO is discussed.

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U2 - 10.1063/1.467338

DO - 10.1063/1.467338

M3 - Article

AN - SCOPUS:0028529383

SN - 0021-9606

VL - 101

SP - 5494

EP - 5499

JO - The Journal of chemical physics

JF - The Journal of chemical physics

IS - 7

ER -

Infrared absorption of cis-cis peroxynitrous acid (HOONO) in solid argon

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