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The ground state infrared spectrum of the MnH radical ( 7Σ) from diode laser spectroscopy
The infrared spectrum of the manganese hydride radical ( 55MnH) in its ground electronic state ( 7Σ) has been observed using a diode laser spectrometer. The wavenumbers of twelve transitions of the v=1→0 band, five of the v=2→1 band and seven of the v=3→2 band have been measured with a nominal accur...
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Published in: | Chemical physics letters 1989-11, Vol.163 (1), p.34-40 |
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Main Authors: | , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | The infrared spectrum of the manganese hydride radical (
55MnH) in its ground electronic state (
7Σ) has been observed using a diode laser spectrometer. The wavenumbers of twelve transitions of the
v=1→0 band, five of the
v=2→1 band and seven of the
v=3→2 band have been measured with a nominal accuracy of ±0.001 cm
−1. Coupling between the electronic spin (
S=3) and the overall molecular rotation causes each ro-vibrational transition with
N>3 to be split (γ 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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ISSN: | 0009-2614 1873-4448 |
DOI: | 10.1016/0009-2614(89)80007-7 |