Microwave measurements of the gas-phase molecular structure of cobalt tetracarbonyl hydride

S. G. Kukolich, S. M. Sickafoose

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12 Scopus citations


Microwave rotational spectra for six isotopomers of HCo(CO)4 were measured using a Flygare-Balle type spectrometer. Transitions were measured in the 4-10 GHz range. The data were analyzed to obtain rotational constants, 59Co quadrupole coupling strengths, distortion constants and spin-rotation interaction strengths. The common isotopomer is clearly a symmetric top, with C3v symmetry. For the common isotopomer 5 = 1131.7212(9) MHz and eQq(59Co)=116.62(3) MHz. The rotational constants were used to determine the complete, three-dimensional structure of this complex. The measured H-Co bond length of 1.52(2) Å is significantly shorter than the previous value from electron diffraction work. Other structural parameters for this complex are reported and discussed.

Original languageEnglish (US)
Pages (from-to)3466-3471
Number of pages6
JournalJournal of Chemical Physics
Issue number9
StatePublished - 1996

ASJC Scopus subject areas

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


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