Spectroscopic studies of intracluster chemistry

Jong-Ho Choi; Mitchio Okumura

doi:10.1117/12.178131

17 June 1994 Spectroscopic studies of intracluster chemistry

Jong-Ho Choi, Mitchio Okumura

Proceedings Volume 2124, Laser Techniques for State-Selected and State-to-State Chemistry II; (1994) https://doi.org/10.1117/12.178131
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

Infrared predissociation spectroscopy of ion-solvent clusters has allowed us to examine the effects of sequential hydration on the reactivity of cations such as NO⁺, NO₂⁺, and protonated formaldehyde, H₂COH⁺, stable gas phase ions which are known to undergo rapid reactions in aqueous solution. Our experiments demonstrate that these ions undergo hydration reactions at critical cluster sizes. The smaller clusters have spectra characteristic of H₂O ligans bound to stable ion cores, but as the cluster size increases, there is a sudden onset for intracluster rearrangements, e.g. NO₂⁺ + H₂O yields H₃O⁺ + HNO₃ which occurs upon hydration with four water molecules. With this approach, we can probe microscopic aspects of solvent effects on chemical reactions including the hydration of carbonyls and acid-catalyzed hydrolysis of amides.

Citation Download Citation

Jong-Ho Choi and Mitchio Okumura "Spectroscopic studies of intracluster chemistry", Proc. SPIE 2124, Laser Techniques for State-Selected and State-to-State Chemistry II, (17 June 1994); https://doi.org/10.1117/12.178131

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