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Titolo:
Nondissociative electron capture by disulfide bonds
Autore:
Carles, S; Lecomte, F; Schermann, JP; Desfrancois, C; Xu, S; Nilles, JM; Bowen, KH; Berges, J; Houee-Levin, C;
Indirizzi:
Univ Paris 13, UMR 7538 CNRS, Phys Lasers Lab, F-93430 Villetaneuse, France Univ Paris 13 Villetaneuse France F-93430 , F-93430 Villetaneuse, France Univ Paris 11, UMR 8600 CNRS, Chim Phys Lab, F-91405 Orsay, France Univ Paris 11 Orsay France F-91405 Chim Phys Lab, F-91405 Orsay, France Univ Paris 06, UMR 7616 CNRS, Chim Theor Lab, F-75005 Paris, France Univ Paris 06 Paris France F-75005 Chim Theor Lab, F-75005 Paris, France Johns Hopkins Univ, Dept Chem, Baltimore, MD 21218 USA Johns Hopkins UnivBaltimore MD USA 21218 t Chem, Baltimore, MD 21218 USA
Titolo Testata:
JOURNAL OF PHYSICAL CHEMISTRY A
fascicolo: 23, volume: 105, anno: 2001,
pagine: 5622 - 5626
SICI:
1089-5639(20010614)105:23<5622:NECBDB>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
GAS-PHASE; PULSE-RADIOLYSIS; REDUCED LYSOZYME; PROTEINS; THIOREDOXIN; RADICALS; ANION; DISSOCIATION; ATTACHMENT; CHAPERONE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Desfrancois, C Univ Paris 13, UMR 7538 CNRS, Phys Lasers Lab, F-93430 Villetaneuse, France Univ Paris 13 Villetaneuse France F-93430 taneuse, France
Citazione:
S. Carles et al., "Nondissociative electron capture by disulfide bonds", J PHYS CH A, 105(23), 2001, pp. 5622-5626

Abstract

By means of Rydberg electron-transfer spectroscopy (RETS), negative ion photoelectron spectroscopy (NIPES), and quantum chemistry calculations, we have studied electron attachment properties of a series of saturated disulfides: dimethyl disulfide, diethyl disulfide, and dipropyl disulfide. Both RETS and NIPES experiments show that the valence anions of these disulfides are stable. RETS further shows that these negative ions result from attachment of nonzero energy electrons (0.2 eV), in contrast to dimers and larger complexes. NIPES experiments provide vertical detachment energies for the three disulfide monomer anions along with their Franck-Condon profiles. Fitting these spectra, using model potentials for the S-S stretch coordinate, finds that the adiabatic electron affinities of these disulfides are positive but rather small, about 0.1 eV. These experimental data compare well with the results of ab initio calculations, performed-at the MP2 level with largebasis sets.

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Documento generato il 03/06/20 alle ore 09:27:12