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Titolo:
Determination of the proton affinities of bromo- and iodoacetonitrile using the kinetic method with full entropy analysis
Autore:
Wenthold, PG;
Indirizzi:
Purdue Univ, Dept Chem, W Lafayette, IN 47907 USA Purdue Univ W LafayetteIN USA 47907 Dept Chem, W Lafayette, IN 47907 USA
Titolo Testata:
JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY
fascicolo: 7, volume: 11, anno: 2000,
pagine: 601 - 605
SICI:
1044-0305(200007)11:7<601:DOTPAO>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
THERMOCHEMICAL DETERMINATIONS; GAS-PHASE; ION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
17
Recensione:
Indirizzi per estratti:
Indirizzo: Wenthold, PG Purdue Univ, Dept Chem, Brown 1393, W Lafayette, IN 47907 USAPurdue Univ Brown 1393 W Lafayette IN USA 47907 IN 47907 USA
Citazione:
P.G. Wenthold, "Determination of the proton affinities of bromo- and iodoacetonitrile using the kinetic method with full entropy analysis", J AM SOC M, 11(7), 2000, pp. 601-605

Abstract

The proton affinities bromo- and iodoacetonitrile are determined using a full implementation of the kinetic method, which includes calculation of theentropies. Branching ratios for dissociation of proton-bound dimers are measured for collision energies ranging from similar to 2 to 5 eV. Using a rigorously correct statistical approach, the proton affinities of bromo- and iodoacetonitrile are calculated to be 179.8 +/- 1.7 and 182.9 +/- 1.6 kcal/mol, respectively. It is shown that neglecting the entropy contributions for these systems leads to proton affinities that are too high by similar to 0.6 kcal/mol. (J Am Soc Mass Spectrom 2000, 11, 601-605) (C) 2000 American Society for Mass Spectrometry.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/07/20 alle ore 22:51:24