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A precise study of the rotational spectrum of formaldehyde H₂¹²C¹⁷O and H₂¹³C¹⁷O

Authors:

Institution:

1. Max Planck Institut für Radioastronomie, Bonn, Germany;2. Physikalisch Chemisches Institut, Justus Liebig Universität, Giessen, Germany

Abstract:

The pure rotational spectra of H₂¹²C¹⁷O and H₂¹³C¹⁷O have been investigated in the frequency region between 8 and 360 GHz in the ground vibrational state. For both isotopic species the ¹⁷O nuclear quadrupole coupling constants and spin-rotation constants have been obtained. From both Q- and R-branch transitions a set of rotational constants and several distortion constants could be derived employing Watson's formalism in A reduction. The obtained rotational constants are in Megahertz:

	H₂¹²C¹⁷O	H₂¹³C¹⁷O
$A$	281 965.0 (30)	281 987.3 (19)
$B$	37 812.287(45)	36 776.790(25)
$C$	33 214.523(31)	32 412.920(19)

Keywords:
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