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Titolo:
Proton-transfer reaction in the ground state of phenol-ammonia clusters: an experimental study
Autore:
Martrenchard-Barra, S; Dedonder-Lardeux, C; Jouvet, C; Solgadi, D; Vervloet, M; Gregoire, G; Dimicoli, I;
Indirizzi:
CEA Saclay, DRECAM, SPAM, F-91911 Gif Sur Yvette, France CEA Saclay Gif Sur Yvette France F-91911 F-91911 Gif Sur Yvette, France Univ Paris Sud, CNRS, Photophys Mol Lab, F-91405 Orsay, France Univ Paris Sud Orsay France F-91405 ophys Mol Lab, F-91405 Orsay, France Univ Paris Sud, LURE, F-91405 Orsay, France Univ Paris Sud Orsay France F-91405 ris Sud, LURE, F-91405 Orsay, France
Titolo Testata:
CHEMICAL PHYSICS LETTERS
fascicolo: 1-2, volume: 310, anno: 1999,
pagine: 173 - 179
SICI:
0009-2614(19990827)310:1-2<173:PRITGS>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
MOLECULAR CLUSTERS; GAS-PHASE; PHENOL-(NH3)N; PICOSECOND; DYNAMICS; SPECTROSCOPY; CHEMISTRY; SPECTRA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Dimicoli, I CEA Saclay, DRECAM, SPAM, F-91911 Gif Sur Yvette, France CEA Saclay Gif Sur Yvette France F-91911 Sur Yvette, France
Citazione:
S. Martrenchard-Barra et al., "Proton-transfer reaction in the ground state of phenol-ammonia clusters: an experimental study", CHEM P LETT, 310(1-2), 1999, pp. 173-179

Abstract

The proton-transfer reaction in the ground state of phenol-ammonia clusters [PhOH(NH3)(n)] has been investigated by single-photon ionization spectroscopy using synchrotron radiation and a photoelectron photoion coincidence detection technique. The proton abstraction by the base (PhOH ... (NH3)(n) double left right arrow PhO- ... H+(NH3)(n)) depends on the proton affinity of ammonia clusters which increases with their size. The present experimentdemonstrates that at least six ammonia molecules clustered with phenol arenecessary to displace the equilibrium and induce the proton transfer in the ground state. The previous nanosecond and picosecond experiments on proton transfer occurring in the excited state of PhOH(NH3)(n) are discussed in the light of these new results. (C) 1999 Elsevier Science B.V. All rights reserved.

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Documento generato il 01/12/20 alle ore 08:14:52