The Millimeter- and Submillimeter-Wave Spectrum of Symmetric Mono-deuterated Methyl Formate (DCOOCH3)

✍ Scribed by L.C. Oesterling; D.W. Ferguson; E. Herbst; F.C. Delucia

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 858 KB
• Volume: 172
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1995.1195

✦ Synopsis

The rotational-torsional spectrum of (\mathrm{DCOOCH}{3}), the symmetric, singly deuterated isotopomer of methyl formate, has been extended into the millimeter-wave and submillimeter-wave regions of the electromagnetic spectrum. A total of 885 lines belonging to the (A) and (E) torsional substates of the ground ( (v{t}=0) ) torsional state has been measured through rotational quantum number (d) (=30) up to a frequency of (377 \mathrm{GHz}). These lines have been added to 27 previously measured microwave lines and the combined data set was analyzed using a global internal axis method. A root-mean-square deviation of (85 \mathrm{kHz}) has been obtained by varying 31 rotation and internal rotation parameters. The newly measured spectra reported should be useful for interstellar searches for (\mathrm{DCOOCH}_{3}), which has yet to be detected unambiguously in interstellar clouds despite the existence of copious numbers of observed transitions for methyl formate. (C) 1995 Academic Press, Inc.