Photoinduced intracluster electron transfer reactions of captured intermediates in gas-phase SN2 reactions

Donna M. Cyr; Gregory A. Bishea; Chau-Chung Han; Lynmarie A. Posey; Mark A. Johnson

doi:10.1117/12.58130

1 April 1992 Photoinduced intracluster electron transfer reactions of captured intermediates in gas-phase S_N2reactions

Donna M. Cyr, Gregory A. Bishea, Chau-Chung Han, Lynmarie A. Posey, Mark A. Johnson

Proceedings Volume 1638, Optical Methods for Time- and State-Resolved Chemistry; (1992) https://doi.org/10.1117/12.58130
Event: OE/LASE '92, 1992, Los Angeles, CA, United States

Abstract

We describe a series of experiments designed to establish the location of the charge-transfer excited states implied by the double minimum potential energy surface for the gas phase S_N2 ion molecule reactions. Two distinguishable species, corresponding to the entrance and exit channel ion dipole complexes, are isolated in an ionized free jet. These complexes are interrogated by photodetachment spectroscopy in addition to the photoexcitation and collisional activation induced fragmentation patterns. Charged transfer excited states are evident in the X^- × CH_4-nY_n (n ≥ 2) species in which dissociative intra-cluster electron transfer yields XY^- product ions while the S_N2 reaction appears to be driven upon photoexcitation of the 1^-•CH₃I complex.

Citation Download Citation

Donna M. Cyr, Gregory A. Bishea, Chau-Chung Han, Lynmarie A. Posey, and Mark A. Johnson "Photoinduced intracluster electron transfer reactions of captured intermediates in gas-phase S_N2reactions", Proc. SPIE 1638, Optical Methods for Time- and State-Resolved Chemistry, (1 April 1992); https://doi.org/10.1117/12.58130

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