ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
Transient infrared (IR) laser spectroscopy near 3100 cm−1 was used to observe the ν1 and ν13 transitions of the allyl radical, with their band origins found to lie at 3113.9779(3) cm−1 and near 3110.5 cm−1, respectively. Detailed assignment and analysis of the ν1 transition identified over 1100 transitions, and yielded improved values for ΔK and ΦK ground state centrifugal distortion constants, as well as a new set of excited state (ν1=1) rotational and centrifugal distortion constants, in addition to determining the band origin. Transitions involving states with quantum number up to Ka=11 and N=27 were identified. Strong perturbations were found in the excited state, included global perturbations of the Ka′=3 branch, extensive perturbations in the Ka′=2 and 4 branches, and very localized perturbations in the Ka′=6 branch. The Ka′=9 and 10 branches also appear to be significantly perturbed. Possible sources for these perturbations are discussed. © 1998 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.477426
