The microwave spectrum and structure for the HCCHCO complex

M. A. Roehrig, S. G. Kukolich

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15 Scopus citations


Rotational transitions were measured for five isotopomers of HCCHCO using a Flygare-Balle type microwave spectrometer. The observed spectrum is consistent with a linear, hydrogen-bonded HCCHCO structure. Measured rotational constants in MHz, are B = 1397.370(1) for HCCOCO, 1394.963(1) for HCCDCO, 1385.142(1) for HCCHCO, 1331.23(1) for DCCHCO and 1329.684(2) for DCCDCO. The measured rotational constants were fit to obtain a center-of-mass separation for HCCHCO of R*c.m. = 5.018(7) Å. Distortion constants were obtained and analyzed to obtain a force constant and estimate the dissociation energy.

Original languageEnglish (US)
Pages (from-to)232-236
Number of pages5
JournalChemical Physics Letters
Issue number3-4
StatePublished - Jan 10 1992

ASJC Scopus subject areas

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


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