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Titolo:
Infrared multiphoton dissociation of acetone in a molecular beam
Autore:
Berrie, CL; Longfellow, CA; Suits, AG; Lee, YT;
Indirizzi:
Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA Univ Calif Berkeley Berkeley CA USA 94720 hem Sci, Berkeley, CA 94720 USA
Titolo Testata:
JOURNAL OF PHYSICAL CHEMISTRY A
fascicolo: 12, volume: 105, anno: 2001,
pagine: 2557 - 2562
SICI:
1089-5639(20010329)105:12<2557:IMDOAI>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
MULTI-PHOTON DISSOCIATION; VIBRATIONAL-STATE DISTRIBUTIONS; 3S RYDBERG STATE; 193 NM; PHOTODISSOCIATION DYNAMICS; STEPWISE DISSOCIATION; EMISSION-SPECTROSCOPY; ROTATIONAL-STATE; DIODE-LASER; AB-INITIO;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
44
Recensione:
Indirizzi per estratti:
Indirizzo: Berrie, CL Univ Kansas, Dept Chem, Lawrence, KS 66045 USA Univ Kansas Lawrence KS USA 66045 Chem, Lawrence, KS 66045 USA
Citazione:
C.L. Berrie et al., "Infrared multiphoton dissociation of acetone in a molecular beam", J PHYS CH A, 105(12), 2001, pp. 2557-2562

Abstract

The infrared multiphoton dissociation of acetone has been studied for the first time under the collisionless conditions of a molecular beam. A singlecarbon-carbon bond rupture channel resulting in the formation of an acetylradical and a methyl radical is the only primary channel observed. The translational energy distribution for this channel peaks near zero with an average translational energy release of only 2.0 kcal/mol as expected for a reaction with no exit barrier. Significant secondary decomposition of the acetyl radical to carbon monoxide and methyl radical is also observed. The translation energy distribution determined for this channel is peaked well away from zero with an average energy release of 6.1 kcal/mol indicating that it proceeds on a potential energy surface with a barrier, consistent with previous UV experiments. No molecular elimination pathways are observed under the conditions of these experiments.

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Documento generato il 09/04/20 alle ore 00:08:26