Microwave measurements of cobalt and nitrogen quadrupole coupling in Co(CO)3No

J=2→3, 3→4, 4→5, and 5→6 transitions in the oblate symmetric top molecule cobalt tricarbonyl nitrosyl were measured using a Flygare–Balle type pulsed beam microwave spectrometer. K=0 and K=3 transitions were observed for J=3→4 and 4→5. Hyperfine structure due to 59Co and 14N nuclear quadrupole coupl...

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Bibliographic Details
Published in:The Journal of chemical physics 1991, Vol.94 (1), p.191-194
Main Authors: KUKOLICH, S. G, ROEHRIG, M. A, HAUBRICH, S. T, SHEA, J. A
Format: Article
Language:English
Subjects:
Atomic and molecular physics
Exact sciences and technology
Fine and hyperfine structure
Molecular properties and interactions with photons
Physics
Properties of molecules and molecular ions
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Summary:J=2→3, 3→4, 4→5, and 5→6 transitions in the oblate symmetric top molecule cobalt tricarbonyl nitrosyl were measured using a Flygare–Balle type pulsed beam microwave spectrometer. K=0 and K=3 transitions were observed for J=3→4 and 4→5. Hyperfine structure due to 59Co and 14N nuclear quadrupole coupling interactions was well resolved. The measured quadrupole coupling strengths are eQqcc (59Co)=35.14(30) MHz and eQqcc (14N)=−1.59(10). Measured rotation and distortion constants are B0=1042.1590(4) MHz and Dj =0.17(8) kHz. The measured B value is 4% smaller than the B value calculated from electron diffraction data. Spin–rotation and a quadrupole distortion term were also obtained for 59Co.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.460377