HIGH RESOLUTION DIODE LASER SPECTROSCOPY OF THE METHYL RADICAL $\nu_{2}$, BAND
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Date
1981
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Ohio State University
Abstract
The methyl $(CH_{3})$ radical was detected in the gas phase by using a tunable diode laser spectrometer. Bonds corresponding to $\nu_{2}=1\leftarrow 0, 2\leftarrow 1, 3\leftarrow 2$ were observed in the $590-750 cm^{-1}$ region. Over a hundred P, Q, and R branch lines were fitted by least squares to a standard vibration-rotation Hamiltonian, and the rotational constants, the centrifugal distortion constants, as well as the 3 band origins were determined accurately. The potential curve determined for the $\nu_{2}$ vibration from the 3 band origins indicates that the methyl radical is planar, without any potential hump at $Q_{2} = 0$.
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