Submillimeter spectroscopy of H${}_2$C${}^{17}$O and a revisit of the rotational spectra of H${}_2$C${}^{18}$O and H${}_2$C${}^{16}$O

Abstract

The rotational spectrum of the formaldehyde isotopologue H${}_2$C${}^{17}$O was investigated between 0.56 and 1.50 THz using a sample of natural isotopic composition. In addition, transition frequencies were determined for H${}_2$C${}^{18}$O and H${}_2$C${}^{16}$O between 1.37 and 1.50 THz. The data were combined with critically evaluated literature data to derive improved sets of spectroscopic parameters which include ${}^{17}$O or H nuclear hyperfine structure parameters.

7 pages, 1 figure, 1 table; J. Mol. Spectrosc., appeared; CDMS links updated

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• Rotational spectra of isotopic species of methyl cyanide, CH${}_3$CN, in their $v_8=1$ excited vibrational states
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