Analysis of Rotational Transitions of Methyl Formate in the Ground and First Excited Torsional States

Molecules

Hitoshi Odashima¹  Kazumi Ogata¹  Kojiro Takagi¹ 

[1] Department of Physics, Toyama University, 3190 Gofuku, Toyama 930-8555, Japan

关键词: Methyl formate;    HCOOCH3;    microwave spectrum;    rotational transition;    internal axis method;    interstellar molecule;   

DOI  :  10.3390/80100139

来源: mdpi

【 摘 要 】

The microwave spectrum of methyl formate has been observed in the 7-200 GHz region, and new 437 lines have been assigned to the first excited A torsional substate. Both excited state lines and ground state lines reported previously were analyzed simultaneously on the basis of an internal axis method Hamiltonian. A total of 3514 lines were fitted to a 10th-order reduced Hamiltonian model involving 67 molecular parameters to a 1s standard deviation of 179 kHz.

【 授权许可】

CC BY   
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.