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Molecules 2003, 8(1), 139-145; doi:10.3390/80100139
Article

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

* , ,  and
Department of Physics, Toyama University, 3190 Gofuku, Toyama 930-8555, Japan
* Author to whom correspondence should be addressed.
Received: 1 January 2003 / Published: 31 January 2003
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Abstract

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.
Keywords: Methyl formate; HCOOCH3; microwave spectrum; rotational transition; internal axis method; interstellar molecule Methyl formate; HCOOCH3; microwave spectrum; rotational transition; internal axis method; interstellar molecule
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Odashima, H.; Ogata, K.; Takagi, K.; Tsunekawa, S. Analysis of Rotational Transitions of Methyl Formate in the Ground and First Excited Torsional States. Molecules 2003, 8, 139-145.

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