+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Second OH overtone excitation and statistical dissociation dynamics of peroxynitrous acid

, : Second OH overtone excitation and statistical dissociation dynamics of peroxynitrous acid. Journal of Chemical Physics 123(20): 204318-204318

The second OH overtone transition of the trans-perp conformer of peroxynitrous acid (tp-HOONO) is identified using infrared action spectroscopy. HOONO is produced by the recombination of photolytically generated OH and NO(2) radicals, and then cooled in a pulsed supersonic expansion. The second overtone transition is assigned to tp-HOONO based on its vibrational frequency (10 195.3 cm(-1)) and rotational band contour, which are in accord with theoretical predictions and previous observations of the first overtone transition. The transition dipole moment associated with the overtone transition is rotated considerably from the OH bond axis, as evident from its hybrid band composition, indicating substantial charge redistribution upon OH stretch excitation. The overtone band exhibits homogeneous line broadening that is attributed to intramolecular vibrational redistribution, arising from the coupling of the initially excited OH stretch to other modes that ultimately lead to dissociation. The quantum state distributions of the OH X (2)Pi (nu=0) products following first and second OH overtone excitation of tp-HOONO are found to be statistical by comparison with three commonly used statistical models. The product state distributions are principally determined by the tp-HOONO binding energy of 16.2(1) kcal mol(-1). Only a small fraction of the OH products are produced in nu=1 following the second overtone excitation, consistent with statistical predictions.


PMID: 16351267

DOI: 10.1063/1.2126968

Other references

Rabuazzo A.M., 1983: Frontiers in diabetes vol 2 new events and facts in diabetes reviewed contents of 1981s major diabetes congresses. Belfiore, F. M. Rabuazzo. Frontiers In Diabetes, Vol. 2. New Events And Facts In Diabetes: Reviewed Contents Of 'S Major Diabetes Congresses. Ix 189p. S. Karger: Basel, Switzerland; New York, N.y., Usa. Ix 189p, 1982

Peneff, P.; Mozzi, F.; Barbarani, V., 1979: Determination of lecithin and sphingomyelin (L/S ratio) in gastric and/or pharyngeal aspirates of the newborn. Minerva Pediatrica 31(11): 835-840

Franca, E.J. de; Fernandes, E.A. de N.; Bacchi, M.A.; Elias, C., 2008: Atlantic Forest: a natural reservoir of chemical elements. The accumulation of chemical elements in biological compartments is one of the strategies of tropical species to adapt to a low-nutrient soil. This study focuses on the Atlantic Forest because of its eco-environmental importance as a natural reser...

Chambers, J.S., 1999: Angiogenesis in lung cancer. Annals of Thoracic Surgery 66(6): 2162-2163

Cutajar, M.C.; Mullen, P.E.; Ogloff, J.R.P.; Thomas, S.D.; Wells, D.L.; Spataro, J., 2010: Suicide and fatal drug overdose in child sexual abuse victims: a historical cohort study. To determine the rate and risk of suicide and accidental fatal drug overdose (ie, overdose deemed not to have been suicide) in individuals who had been medically ascertained as having been sexually abused during childhood. A historical cohort link...

Fujiki, M.; Kobayashi, H.; Inoue, R.; Ishii, K., 2004: A single oral dose of geranylgeranylacetone attenuates kainic acid-induced seizures and neuronal cell death in rat hippocampus. The present study evaluated the potential effect of geranylgeranylacetone (GGA), which is known as an antiulcer agent, against kainic acid (KA)-induced neurotoxicity. Pretreatment with a single oral GGA dose (800 mg/kg, 2 days before KA) significa...

Gupta, S.K.; Peshin, S.S.; Srivastava, A.; Kaleekal, T.; Pandian, T.V., 2002: Epidemiology of acute poisoning. National Medical Journal of India 15(3): 177-177

Pàmpols, T.; Pineda, M.; Girós, M.L.; Ferrer, I.; Cusi, V.; Chabás, A.; Sanmarti, F.X.; Vanier, M.T.; Christomanou, H., 1999: Neuronopathic juvenile glucosylceramidosis due to sap-C deficiency: clinical course, neuropathology and brain lipid composition in this Gaucher disease variant. Glucosylceramide lipidosis results from a defective lysosomal degradation of this glycolipid. Lipid degradation is controlled by two components, the enzyme beta-glucocerebrosidase and a sphingolipid activator protein. While most Gaucher cases are...

Allen, J.C.; Aviner, S.; Yates, A.J.; Boyett, J.M.; Cherlow, J.M.; Turski, P.A.; Epstein, F.; Finlay, J.L.; Group, C.'s Cancer, 1998: Treatment of high-grade spinal cord astrocytoma of childhood with 8-in-1 chemotherapy and radiotherapy: A pilot study of CCG-945. Object. The purpose of this study was to devise an improved method of treating high-grade gliomas of the spinal cord in children who have a dismal prognosis following conventional treatment. Methods. Eighteen children with newly diagnosed high-gra...

Mevorach, D.; Elkon, K.B., 1998: Complement-dependent uptake of apoptotic cells by human macrophages. Arthritis & Rheumatism 41(9 SUPPL ): S244, Sept