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

S. G. Kukolich, M. A. Roehrig, S. T. Haubrich, J. A. Shea

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


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 eQq cc. (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.

Original languageEnglish (US)
Pages (from-to)191-194
Number of pages4
JournalThe Journal of chemical physics
Issue number1
StatePublished - 1991

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry


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