The reaction of O(1D) with H2O, D2O monomers and clusters and the intracomplex reaction in N2O-X2O (X=H,D) photo-initiated at 193 and 212.8 nm

Kohei Imura, M. Veneziani, T. Kasai, R. Naaman

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The reaction of O(1D) with water and water clusters was re-examined. We monitored the nascent product state distributions in the reaction photo-initiated by the dissociation of N2O at 193 and 212.8 nm, and the corresponding photo-initiated intracluster reaction. The study at two different dissociation wavelengths and the use of D2O allowed us to obtain direct information on the effect of initial collision kinetic energy on the energy distribution in the product. Based on the new results obtained we conclude that the reaction of Q(1D) with water occurs through abstraction mechanism with a relatively short lived collision complex. In the case of the intracluster reaction, we have indication that more internal energy is deposited in the N2 moiety, compared to the dissociation of an isolated N2O. In addition the results indicate that the reaction between the oxygen atom and the water in the complex involved the formation of a short lived collision complex, with a lifetime of probably only few rotations of OH.

Original languageEnglish
Pages (from-to)4025-4031
Number of pages7
JournalJournal of Chemical Physics
Volume111
Issue number9
Publication statusPublished - 1999
Externally publishedYes

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monomers
Monomers
Water
dissociation
water
collisions
Kinetic energy
products
Oxygen
internal energy
Wavelength
Atoms
oxygen atoms
energy distribution
indication
kinetic energy
life (durability)
wavelengths

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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The reaction of O(1D) with H2O, D2O monomers and clusters and the intracomplex reaction in N2O-X2O (X=H,D) photo-initiated at 193 and 212.8 nm. / Imura, Kohei; Veneziani, M.; Kasai, T.; Naaman, R.

In: Journal of Chemical Physics, Vol. 111, No. 9, 1999, p. 4025-4031.

Research output: Contribution to journalArticle

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AU - Veneziani, M.

AU - Kasai, T.

AU - Naaman, R.

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N2 - The reaction of O(1D) with water and water clusters was re-examined. We monitored the nascent product state distributions in the reaction photo-initiated by the dissociation of N2O at 193 and 212.8 nm, and the corresponding photo-initiated intracluster reaction. The study at two different dissociation wavelengths and the use of D2O allowed us to obtain direct information on the effect of initial collision kinetic energy on the energy distribution in the product. Based on the new results obtained we conclude that the reaction of Q(1D) with water occurs through abstraction mechanism with a relatively short lived collision complex. In the case of the intracluster reaction, we have indication that more internal energy is deposited in the N2 moiety, compared to the dissociation of an isolated N2O. In addition the results indicate that the reaction between the oxygen atom and the water in the complex involved the formation of a short lived collision complex, with a lifetime of probably only few rotations of OH.

AB - The reaction of O(1D) with water and water clusters was re-examined. We monitored the nascent product state distributions in the reaction photo-initiated by the dissociation of N2O at 193 and 212.8 nm, and the corresponding photo-initiated intracluster reaction. The study at two different dissociation wavelengths and the use of D2O allowed us to obtain direct information on the effect of initial collision kinetic energy on the energy distribution in the product. Based on the new results obtained we conclude that the reaction of Q(1D) with water occurs through abstraction mechanism with a relatively short lived collision complex. In the case of the intracluster reaction, we have indication that more internal energy is deposited in the N2 moiety, compared to the dissociation of an isolated N2O. In addition the results indicate that the reaction between the oxygen atom and the water in the complex involved the formation of a short lived collision complex, with a lifetime of probably only few rotations of OH.

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