Internal Excitation in the Products of Nucleophilic Substitution from the Dissociation of Metastable Ion Complexes

Autor:	and Petra A. M. van Koppen, John E. Bushnell, Michael T. Bowers, Catherine J. Carpenter, Susan T. Graul
Rok vydání:	1998
Předmět:	Substitution reaction Exothermic reaction Chemistry General Chemistry Reaction intermediate Photochemistry Kinetic energy Biochemistry Catalysis Dissociation (chemistry) Ion Colloid and Surface Chemistry Nucleophilic substitution Physical chemistry SN2 reaction Physics::Chemical Physics
Zdroj:	Journal of the American Chemical Society. 120:6785-6796
ISSN:	1520-5126 0002-7863
Popis:	The relative kinetic energy distributions for the products of the dissociation of four metastable gas-phase ion clusters have been analyzed by means of ion kinetic energy spectroscopy, and the results modeled using statistical phase space theory. The systems studied represent reaction intermediates in bimolecular nucleophilic substitutions (SN2). These studies build on previous investigations that demonstrated vibrational excitation in the products of the substitution reactions of halide ions with methyl halides.1 The present studies explore the effects of molecular structure, reaction exothermicity, and nucleophile and leaving group variation. The experimental kinetic energy distributions are compared with theoretical distributions calculated for statistical partitioning of energy among internal modes and relative kinetic energy of the products. In each reaction, the calculated distributions agree with the experimental distributions only if a significant fraction of the energy released in the exothermic ...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4b567735e320db3e9fa6230516f85d3e https://doi.org/10.1021/ja9730775 Zobrazit plný text záznamu