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The ground state infrared spectrum of the MnH radical (7Σ) from diode laser spectroscopy

✍ Scribed by Rolf-Dieter Urban; Harold Jones

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
522 KB
Volume
163
Category
Article
ISSN
0009-2614

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✦ Synopsis

The infrared spectrum of the manganese hydride radical (5JMnH) in its ground electronic state ('2) has been observed using a diode laser spectrometer. The wavenumbers of twelve transitions of the v= 14 band, five of the v= 2 t 1 band and seven of the v=&-2 band have been measured with a nominal accuracy of +O.OOl cm-'. Coupling between the electronic spin (S=3) and the overall molecular rotation causes each ro-vibrational transition with N> 3 to be split ( y splitting) into seven components each separated by a few hundredths of a wavenumber. In most cases the complete structure was resolved. Correction terms arising from spin-spin coupling had to be included in the analysis. This work has produced the most accurate set of ground-state parameters available for MnH.

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