Spectroscopy and Dissociation Dynamics of the 1-METHYLALLYL Radical

Details Spectroscopy and Dissociation Dynamics of the 1-METHYLALLYL Radical Spectroscopy and Dissociation Dynamics of the 1-METHYLALLYL Radical

Jun 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010mss..confemi05g&link_type=abstract

"International Symposium On Molecular Spectroscopy, 65th Meeting, Held 21-25 June, 2010 at Ohio State University. http://molspec

Computer Science

Radicals And Ions

Scientific paper

The ~A←~X band system of jet-cooled 1-methylallyl radical (C_4H_7) was observed for the first time using resonance-enhanced multiphoton ionization combined with electronic ground state depletion spectroscopy. Analysis of the vibronic structure reveals transitions to the non-planar ~A valence excited state with an electronic origin for the Z-isomer of 1-methylallyl at 23 979 cm-1. Time- and frequency-resolved photoionization of the hydrogen atom product from electronically excited 1-methylallyl radical and its isotopologue CH_3C_3D_4 provides information on the dissociation dynamics. The measured dissociation rates and kinetic energy release combined with results from high level ab initio calculations suggests unimolecular decompostion to 1,3-butadiene and hydrogen with no evidence for nonstatistical behavior in dissociation.

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