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

doi:10.3390/80100139

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

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

Hitoshi Odashima* , Kazumi Ogata, Kojiro Takagi and Shozo Tsunekawa

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

(This article belongs to the Special Issue Selected Papers from the International Symposium on Frontiers in Molecular Science (ISFMS 2002))

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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

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MDPI and ACS Style

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.

AMA Style

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(1):139-145.

Chicago/Turabian Style

Odashima, Hitoshi; Ogata, Kazumi; Takagi, Kojiro; Tsunekawa, Shozo. 2003. "Analysis of Rotational Transitions of Methyl Formate in the Ground and First Excited Torsional States." Molecules 8, no. 1: 139-145.

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