The microwave spectrum of an unstable molecule, HPO
Abstract
The HPO molecule was identified by its microwave spectrum in the reaction of PH3 with microwave discharge products of an H2/O2 mixture; the a-type R branch transitions of J=1 ← 0 up to 4 ← 3 were observed in the frequency region of 40 to 162 GHz. High- K lines showed small splittings due to the phosphorus nuclear spin-rotation interaction. In addition to the rotational and centrifugal distortion constants, the observed spectrum yielded the nuclear spin-rotation tensor, the aa component which is -1.12 (37) MHz with 2.5 standard errors in parentheses. This large interaction is discussed in terms of second-order perturbation theory.
- Publication:
-
Journal of Chemical Physics
- Pub Date:
- February 1986
- DOI:
- 10.1063/1.450505
- Bibcode:
- 1986JChPh..84.1157S
- Keywords:
-
- Interstellar Gas;
- Microwave Spectra;
- Molecular Spectra;
- Nuclear Spin;
- Perturbation Theory;
- Phosphorus Compounds;
- Line Spectra;
- Matrices (Mathematics);
- Molecular Oscillations;
- Spectrometers;
- Atomic and Molecular Physics