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  • Electronic Resource  (2)
  • 1990-1994  (2)
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  • Electronic Resource  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 94 (1991), S. 191-194 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: 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.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 97 (1992), S. 7873-7880 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: High resolution rotational spectra for 21 isotopic species of the hydrogen cyanide–mercury complex have been measured in the 7–15 GHz region using a Balle/Flygare pulsed Fourier transform microwave spectrometer. Rotational constants and 14N nuclear quadrupole coupling constants are (in MHz), for HC14N202Hg: B0=1265.6627(7), DJ=0.020 669(14), χN=−0.695(12), and for DC14N202Hg: B0=1201.8338(16), DJ=0.021 213(45), and χN=−0.748(19). The 201Hg nuclear quadrupole coupling constants are, for HC15N201Hg: −5.97(13) MHz, and for DC15N201Hg: −6.03(24) MHz. The atomic arrangement is HCN...Hg with a zero-point vibrationally averaged center-of-mass separation of 4.05 A(ring) for the most abundant HC14N202Hg species. The equilibrium structure was not determined. HCNHg does not exhibit the extreme centrifugal distortion and isotopic sensitivity effects seen in ArHCN [K. R. Leopold, G. T. Fraser, F. J. Lin, D. D. Nelson, Jr., and W. Klemperer, J. Chem. Phys. 81, 4922 (1984)].
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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