Microwave Spectra: Methyl Cyanide and Methyl Isocyanide

Ring, Harold; Edwards, H. D.; Kessler, Myer; Gordy, Walter

doi:10.1103/physrev.72.1262.2

Cited by 25 publications

(8 citation statements)

References 6 publications

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“…Somewhat blended signal was observed near the frequencies corresponding to the J = 4 → 3, 5 → 4, and 7 → 6 transitions at 80.4, 100.5, and 140.7 GHz, respectively. Although no reference is given for these frequencies, they were presumably enabled by the laboratory work of Kukolich (1972) and Ring et al (1947). The detection was confirmed nearly two decades later in GBT 100-m observations of Sgr B2 by Remijan et al (2005) who observed the J K = 1 0 → 0 0 transition in absorption at 20.1 GHz and by Gratier et al (2013) who observed three lines in the J = 5 → 4 transition at 100.5 GHz with the IRAM 30-m toward the Horsehead PDR.…”

Section: Ch 3 Nc (Methyl Isocyanide)mentioning

confidence: 99%

2018 Census of Interstellar, Circumstellar, Extragalactic, Protoplanetary Disk, and Exoplanetary Molecules

McGuire

2018

ApJS

389

290

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To date, 204 individual molecular species, comprised of 16 different elements, have been detected in the interstellar and circumstellar medium by astronomical observations. These molecules range in size from two atoms to seventy, and have been detected across the electromagnetic spectrum from cmwavelengths to the ultraviolet. This census presents a summary of the first detection of each molecular species, including the observational facility, wavelength range, transitions, and enabling laboratory spectroscopic work, as well as listing tentative and disputed detections. Tables of molecules detected in interstellar ices, external galaxies, protoplanetary disks, and exoplanetary atmospheres are provided. A number of visual representations of this aggregate data are presented and briefly discussed in context.

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Section: Ch 3 Nc (Methyl Isocyanide)mentioning

confidence: 99%

2018 Census of Interstellar, Circumstellar, Extragalactic, Protoplanetary Disk, and Exoplanetary Molecules

McGuire

2018

ApJS

389

290

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“…As far as microwave spectroscopy is concerned, methylcyanide was one of the first molecules studied [4]. A thorough summary of the investigations carried out up to 1980 was published by Boucher et al [5].…”

Section: Introductionmentioning

confidence: 99%

The Lamb-dip spectrum of methylcyanide: Precise rotational transition frequencies and improved ground-state rotational parameters

Cazzoli

Puzzarini

2006

Journal of Molecular Spectroscopy

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“…It was actually among the first molecules to be studied by microwave spectroscopy by Ring et al (1947). Cazzoli & Puzzarini (2006) reviewed the investigations for the main isotopic species and performed high resolution, high accuracy measurements up to 1.2 THz.…”

Section: Introductionmentioning

confidence: 99%

Rotational spectra of isotopic species of methyl cyanide, CH₃CN, in their ground vibrational states up to terahertz frequencies

Müller¹,

Drouin

Pearson

2009

A&A

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Context. Methyl cyanide is an important trace molecule in star-forming regions. It is one of the more common molecules used to derive kinetic temperatures in such sources. Aims. As preparatory work for Herschel, SOFIA, and in particular ALMA we want to improve the rest frequencies of the main as well as minor isotopologs of methyl cyanide. Methods. The laboratory rotational spectrum of methyl cyanide in natural isotopic composition has been recorded up to 1.63 THz. Results. Transitions with good signal-to-noise ratio could be identified for CH 3 CN, 13 CH 3 CN, CH 13 3 CN, CH 3 C 15 N, CH 2 DCN, and 13 CH 13 3 CN in their ground vibrational states up to about 1.2 THz. The main isotopic species could be identified even in the highest frequency spectral recordings around 1.6 THz. The highest J quantum numbers included in the fit are 64 for 13 CH 13 3 CN and 89 for the main isotopic species. Greatly improved spectroscopic parameters have been obtained by fitting the present data together with previously reported transition frequencies.Conclusions. The present data will be helpful to identify isotopologs of methyl cyanide in the higher frequency bands of instruments such as the recently launched Herschel satellite, the upcoming airplane mission SOFIA or the radio telescope array ALMA.

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Microwave Spectra: Methyl Cyanide and Methyl Isocyanide

Cited by 25 publications

References 6 publications

2018 Census of Interstellar, Circumstellar, Extragalactic, Protoplanetary Disk, and Exoplanetary Molecules

2018 Census of Interstellar, Circumstellar, Extragalactic, Protoplanetary Disk, and Exoplanetary Molecules

The Lamb-dip spectrum of methylcyanide: Precise rotational transition frequencies and improved ground-state rotational parameters

Rotational spectra of isotopic species of methyl cyanide, CH₃CN, in their ground vibrational states up to terahertz frequencies

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Microwave Spectra: Methyl Cyanide and Methyl Isocyanide

Cited by 25 publications

References 6 publications

2018 Census of Interstellar, Circumstellar, Extragalactic, Protoplanetary Disk, and Exoplanetary Molecules

2018 Census of Interstellar, Circumstellar, Extragalactic, Protoplanetary Disk, and Exoplanetary Molecules

The Lamb-dip spectrum of methylcyanide: Precise rotational transition frequencies and improved ground-state rotational parameters

Rotational spectra of isotopic species of methyl cyanide, CH3CN, in their ground vibrational states up to terahertz frequencies

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Rotational spectra of isotopic species of methyl cyanide, CH₃CN, in their ground vibrational states up to terahertz frequencies