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Rotational spectrum of HCBr produced by 193-nm laser photolysis of bromoform

✍ Scribed by Chuanxi Duan; Mélynda Hassouna; Adam Walters; Marc Godon; Pascal Dréan; Marcel Bogey

Book ID
104151822
Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
249 KB
Volume
220
Category
Article
ISSN
0022-2852

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✦ Synopsis

The pure rotational spectrum of bromomethylene (HCBr) was studied by kinetic microwave spectroscopy between 420 and 472 GHz. The HCBr radical was produced by 193-nm ArF laser photolysis of bromoform (CHBr 3 ). More than 130 rotational transitions for both HC 79 Br and HC 81 Br species in the ground vibrational state were measured involving 1 6 J 6 33 and 0 6 K a 6 5. The spectra were well described by an S-reduced Watson Hamiltonian in the I r representation including the nuclear quadrupole and spin-rotation hyperfine terms. Rotational, centrifugal distortion, 79;81 Br nuclear quadrupole and spin-rotation coupling constants were derived for both HC 79 Br and HC 81 Br species in the ground vibrational state.

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