TY - JOUR
T1 - Spectroscopic studies of intracluster chemistry
AU - Choi, Jong Ho
AU - Okumura, Mitchio
N1 - Funding Information:
We acknowledge support of an NSF Presidential Young Investigator Award CHEM$957423, E. I. DuPont deNemours 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 Pmject 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 Information:
We acknowledge support of an NSF Presidential Young Investigator Award CHEM-8957423, E. I. DuPont deNemours 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 Mary Frances Jagod for her heroic efforts in reprogramming the asymmetric rotor spectrum prediction program ASMWIR.
Publisher Copyright:
© 1994 SPIE. All rights reserved.
PY - 1994/6/17
Y1 - 1994/6/17
N2 - 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 ligands bound to stable ion cores, but as the cluster size increases, there is a sudden onset for intracluster rearrangements, e.g. NO2++ H2O → 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 acidcatalyzed hydrolysis of amides.
AB - 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 ligands bound to stable ion cores, but as the cluster size increases, there is a sudden onset for intracluster rearrangements, e.g. NO2++ H2O → 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 acidcatalyzed hydrolysis of amides.
UR - http://www.scopus.com/inward/record.url?scp=85076577274&partnerID=8YFLogxK
U2 - 10.1117/12.178131
DO - 10.1117/12.178131
M3 - Conference article
AN - SCOPUS:85076577274
SN - 0277-786X
VL - 2124
SP - 205
EP - 212
JO - Proceedings of SPIE - The International Society for Optical Engineering
JF - Proceedings of SPIE - The International Society for Optical Engineering
T2 - Laser Techniques for State-Selected and State-to-State Chemistry II 1994
Y2 - 23 January 1994 through 29 January 1994
ER -