The submillimeter-wave spectrum of the chloromethyl radical, CH 2Cl, in the ground vibronic state

We have extended the measurement of submillimeter wave transitions of CH 2Cl between 418 and 470 GHz for the two isotopic species of Cl. The radical was produced in a fast flow system by hydrogen abstraction of CH 3Cl by Cl atoms obtained from a 2450 MHz microwave discharge in Cl 2 diluted with heli...

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Bibliographic Details
Published inJournal of molecular spectroscopy Vol. 229; no. 1; pp. 140 - 144
Main Authors Bailleux, Stéphane, Dréan, Pascal, Zelinger, Zdeněk, Godon, Marc
Format Journal Article
LanguageEnglish
Published Elsevier Inc 2005
Subjects
CH 2Cl
Chloromethyl radical
Millimeter-wave
Spectroscopy
Chloromethyl radical
Spectroscopy
CH 2Cl
Millimeter-wave
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Summary:We have extended the measurement of submillimeter wave transitions of CH 2Cl between 418 and 470 GHz for the two isotopic species of Cl. The radical was produced in a fast flow system by hydrogen abstraction of CH 3Cl by Cl atoms obtained from a 2450 MHz microwave discharge in Cl 2 diluted with helium. A global least-squares analysis including the previous and the newly observed transitions led to a more precise set of rotational, fine and hyperfine constants for the two isotopomers in their ground vibronic state. In addition, we have also observed CH 2Cl by the 248 nm photolysis of CH 2BrCl, leading to a single 1/ e lifetime of 146 ms.
ISSN:0022-2852
1096-083X
DOI:10.1016/j.jms.2004.08.008