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Spectroscopic Studies of Intracluster Chemistry

Choi, Jong-Ho and Okumura, Mitchio (1994) Spectroscopic Studies of Intracluster Chemistry. In: Laser Techniques for State-Selected and State-to-State Chemistry II. Proceedings of SPIE. No.2124. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 205-212. ISBN 0-8194-1417-4.

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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^+, NO_2^+, and protonated formaldehyde, H_2COH^+, 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 H_2O ligans bound to stable ion cores, but as the cluster size increases, there is a sudden onset for intracluster rearrangements, e.g. NO_2^+ + H_2O yields H_3O^+ + HNO_3 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.

Item Type:Book Section
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Okumura, Mitchio0000-0001-6874-1137
Additional Information:© 1994 The International Society for Optical Engineering. SPIE. We acknowledge support of an NSF Presidential Young Investigator Award CHEM-8957423, E. I. DuPont de Nemours and Company, the Irvine Foundation, the Chevron Fund, an AT&T Special Purpose Grant, an NSF predoctoral fellowship for K.K., and the JPL Supercomputer Project for the computational studies. We are grateful to Maiy Frances Jagod for her heroic efforts in reprogramming the asymmetric rotor spectrum prediction program ASMWIR.
Funding AgencyGrant Number
E. I. DuPont de Nemours and Company, Inc.UNSPECIFIED
James Irvine FoundationUNSPECIFIED
NSF Predoctoral FellowshipUNSPECIFIED
Series Name:Proceedings of SPIE
Issue or Number:2124
Record Number:CaltechAUTHORS:20161019-115841347
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Official Citation:Jong-Ho Choi ; Mitchio Okumura; Spectroscopic studies of intracluster chemistry. Proc. SPIE 2124, Laser Techniques for State-Selected and State-to-State Chemistry II, 205 (June 17, 1994); doi:10.1117/12.178131.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:71275
Deposited By: Ruth Sustaita
Deposited On:19 Oct 2016 19:25
Last Modified:03 Oct 2019 16:05

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