Abstract
The new experimental results and analysis of the microwave spectra of HCOO13CH3 in the second methyl torsional excited state are reported. Pseudo-principal axis method (pseudo-PAM) was successfully applied to the normal methyl formate in the second torsional excited state and again applied to this isotopologue. We succeeded to assign 536 A-species transitions up to J = 33 and Ka = 15 and 417 E-species transitions up to J = 32 and Ka = 14. Thirty parameters were used to do the least-squares-analysis by using the pseudo-PAM Hamiltonian consisting of rotational, centrifugal distortion, and internal-rotational constants.
Original language | English |
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Pages (from-to) | 50-53 |
Number of pages | 4 |
Journal | Journal of Molecular Spectroscopy |
Volume | 343 |
DOIs | |
State | Published - 2018/01 |
Keywords
- Internal rotation
- Isotopologue
- Methyl formate
- Microwave spectroscopy
- Pseudo-PAM method
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Spectroscopy
- Physical and Theoretical Chemistry