Muonium reactions with chloroacetic acid in water: Contrasts with H atoms and hydrated electrons

Autor:	David C. Walker, Krishnan Venkateswaran, John M. Stadlbauer
Rok vydání:	1997
Předmět:	chemistry.chemical_compound Radiation Aqueous solution Reaction rate constant chemistry Nucleophile Kinetic isotope effect Inorganic chemistry Muonium Chloroacetic acid Solvated electron Chemical reaction
Zdroj:	Radiation Physics and Chemistry. 50:259-262
ISSN:	0969-806X
DOI:	10.1016/s0969-806x(97)00033-9
Popis:	Muonium atoms react with chloroacetic acid and chloroacetate ions in dilute aqueous solution with rate constants of 2.3 × 106 and 9.1 × 105 dm3 mol−1 s−1 respectively. These are compared with the reactions of 1H atoms (and eaq−) and discussed in terms of a pair of competing kinetic isotope effects. Muonium reacts at least eight times faster than H overall, and probably 28 times faster in forming Cl−. It behaves as a nucleophile, thus resembling eaq− more than H, in reacting faster with the acid than the anion. Muonium's reactions must be governed to a considerable extent by quantum-mechanical effects arising from its very small mass.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bcdd9748fc0c3bbf005e338ef033a7fc https://doi.org/10.1016/s0969-806x(97)00033-9 Zobrazit plný text záznamu Full Text from ScienceDirect