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The CH stretching mode of the ketenyl (HCCO) radical
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10.1063/1.2829400
/content/aip/journal/jcp/128/6/10.1063/1.2829400
http://aip.metastore.ingenta.com/content/aip/journal/jcp/128/6/10.1063/1.2829400

Figures

Image of FIG. 1.
FIG. 1.

Representative time-resolved emission spectra following dissociation of ethyl ethynyl ether as observed with a MCT detector. The intensity has been corrected with the detector spectral efficiency.

Image of FIG. 2.
FIG. 2.

Representative time-resolved FTIR emission spectra following photodissociation of ethyl ethynyl ether as observed with an InSb detector. The intensity has been corrected with the detector spectral efficiency.

Image of FIG. 3.
FIG. 3.

Integrated time profile of the (HCCO , o) and the (HCCO , x) features. Both features show a fast rise (on the time scale of the detection system) time followed by a moderately fast decay process. The feature also shows a slower secondary rise followed by a very slow decay from vibrationally excited CO.

Image of FIG. 4.
FIG. 4.

(a) Spectra at different times following photodissociation extracted as diagonals from the synchronous correlation maps. (b) Late time spectra of the CH stretching region magnified to show detail.

Image of FIG. 5.
FIG. 5.

2D asynchronous correlation map of the InSb spectra highlighting the off-diagonal correlation between the peak and the CH stretching region.

Image of FIG. 6.
FIG. 6.

Comparison of the late time spectrum extracted as the square root of the synchronous correlation diagonal and a calculated IR (emission) spectrum based on the anharmonically corrected coupled-cluster calculation of Szalay (Ref. 11).

Image of FIG. 7.
FIG. 7.

Comparison of the late time emission spectrum (solid line) and the rotational contour simulation (dotted line) of the CH stretching mode of ketenyl.

Tables

Generic image for table
Table I.

Summary of observed spectral features and assignment of origin in the TR-FTIRES spectra detected following photolysis of EEE.

Generic image for table
Table II.

Theoretical frequencies , with anharmonic corrections, transition dipole moments (D), and relative emission intensities (arbitrary unit) of the vibrational modes of the HCCO radical.

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/content/aip/journal/jcp/128/6/10.1063/1.2829400
2008-02-12
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: The ν1 CH stretching mode of the ketenyl (HCCO) radical
http://aip.metastore.ingenta.com/content/aip/journal/jcp/128/6/10.1063/1.2829400
10.1063/1.2829400
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