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Titolo:
Water complexes as catalysts in atmospheric reactions
Autore:
Staikova, M; Donaldson, DJ;
Indirizzi:
Univ Toronto, Dept Chem, Toronto, ON M5S 1A1, Canada Univ Toronto TorontoON Canada M5S 1A1 Chem, Toronto, ON M5S 1A1, Canada Univ Toronto, Scarborough Coll, Toronto, ON M5S 1A1, Canada Univ Toronto Toronto ON Canada M5S 1A1 Coll, Toronto, ON M5S 1A1, Canada
Titolo Testata:
PHYSICS AND CHEMISTRY OF THE EARTH PART C-SOLAR-TERRESTIAL AND PLANETARY SCIENCE
fascicolo: 7, volume: 26, anno: 2001,
pagine: 473 - 478
SICI:
1464-1917(2001)26:7<473:WCACIA>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
PEROXYNITRIC ACID HOONO2; MICROWAVE-SPECTRUM; RADICAL COMPLEX; AB-INITIO; PHOTOLYSIS; ADSORPTION; EXISTENCE; INTERFACE; CLUSTERS; GASES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
27
Recensione:
Indirizzi per estratti:
Indirizzo: Donaldson, DJ Univ Toronto, Dept Chem, 80 St George St, Toronto, ON M5S 1A1, Canada Univ Toronto 80 St George St Toronto ON Canada M5S 1A1 anada
Citazione:
M. Staikova e D.J. Donaldson, "Water complexes as catalysts in atmospheric reactions", PHYS CH P C, 26(7), 2001, pp. 473-478

Abstract

Several atmospherically important reactions involve the formation of a complex between the reagent molecule(s) and one or more water molecules. We will present a brief review of this phenomenon and give some of our recent abinitio results on the effect that the formation of complexes with water may have on the photodissociation of ozone, nitric and peroxynitric acids. Changes in the singlet-triplet potential energy surface splittings and absorption intensities when ozone is complexed with water are inferred from the photochemistry of the complex [Hurwitz and Namaan, 1995]. A significant red shift in the vertical excitation energy of at least one triplet state of ozone is predicted by our calculations, when the molecule is in a complex with water. No such changes are predicted for the acids: their electronic absorption spectra remain unaltered by water complex formation. The infrared absorption intensities of their OH vibrational stretch transitions, however, are enhanced by about an order of magnitude in the complex. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/04/20 alle ore 20:54:51