Structure, spectroscopic properties, and photochemistry of the hydroxymethoxy radical

Eisfeld W, Francisco JS (2009)
JOURNAL OF CHEMICAL PHYSICS 131(13): 134313.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
The hydroxymethoxy (HMO) radical is proposed to be the primary product of photodissociation of the atmospherically important hydroxymethyl hydroperoxide (HMHP). This transient species is still unknown and the present study provides theoretical predictions of properties, spectroscopy, and photochemistry of this radical for the first time. Structures, harmonic frequencies, vertical and vibrationally resolved absorption spectra are computed for several electronic states, using state-of-the-art ab initio electronic structure methods. The lowest excited state, absorbing in the mid to near infrared, seems to be the most promising candidate for spectroscopic identification of HMO. The electron affinity of 2.232 eV and the characteristic photodetachment spectrum is also predicted to be suitable for experimental investigations. By contrast, the (B) over tilde state absorbing around 3.5 eV is proposed to undergo fast photodissociation, forming CH2O and OH, and thus appears less useful for spectroscopic detection of HMO. However, the photodissociation may be important for the atmospheric chemistry of HMHP. Ionization of HMO will also lead to dissociation or rearrangement of the cation and will yield only unspecific spectra. (C) 2009 American Institute of Physics. [doi:10.1063/1.3231145]
Erscheinungsjahr
2009
Zeitschriftentitel
JOURNAL OF CHEMICAL PHYSICS
Band
131
Ausgabe
13
Seite(n)
134313
ISSN
0021-9606
Page URI
https://pub.uni-bielefeld.de/record/1590254

Zitieren

Eisfeld W, Francisco JS. Structure, spectroscopic properties, and photochemistry of the hydroxymethoxy radical. JOURNAL OF CHEMICAL PHYSICS. 2009;131(13):134313.
Eisfeld, W., & Francisco, J. S. (2009). Structure, spectroscopic properties, and photochemistry of the hydroxymethoxy radical. JOURNAL OF CHEMICAL PHYSICS, 131(13), 134313. doi:10.1063/1.3231145
Eisfeld, W., and Francisco, J. S. (2009). Structure, spectroscopic properties, and photochemistry of the hydroxymethoxy radical. JOURNAL OF CHEMICAL PHYSICS 131, 134313.
Eisfeld, W., & Francisco, J.S., 2009. Structure, spectroscopic properties, and photochemistry of the hydroxymethoxy radical. JOURNAL OF CHEMICAL PHYSICS, 131(13), p 134313.
W. Eisfeld and J.S. Francisco, “Structure, spectroscopic properties, and photochemistry of the hydroxymethoxy radical”, JOURNAL OF CHEMICAL PHYSICS, vol. 131, 2009, pp. 134313.
Eisfeld, W., Francisco, J.S.: Structure, spectroscopic properties, and photochemistry of the hydroxymethoxy radical. JOURNAL OF CHEMICAL PHYSICS. 131, 134313 (2009).
Eisfeld, Wolfgang, and Francisco, Joseph S. “Structure, spectroscopic properties, and photochemistry of the hydroxymethoxy radical”. JOURNAL OF CHEMICAL PHYSICS 131.13 (2009): 134313.

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