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J/A+A/601/A2        Triple 13C-substituted ethyl cyanide      (Pienkina, 2017)

The millimeter and sub-millimeter rotational spectrum of triple 13C-substituted ethyl cyanide. Pienkina A.O., Margules L., Motiyenko R.A., Muller H.S.P., Guillemin J.-C. <Astron. Astrophys. 601, A2 (2017)> =2017A&A...601A...2P (SIMBAD/NED BibCode)
ADC_Keywords: Atomic physics Keywords: molecular data - submillimeter: ISM - ISM: molecules - techniques: spectroscopic - line: identification - methods: laboratory: molecular Abstract: A recently published astronomical detection of all three doubly 13C-substituted ethyl cyanides toward Sgr B2(N2) motivated us to investigate triple 13C isotopic species that are expected to be also present in the ISM. We aim to present an experimental study of the rotational spectrum of triple 13C-substituted ethyl cyanide, 13CH3 13CH2 13CN, in the frequency range 150-990GHz. We want to use the determined spectroscopic parameters for searching for 13CH3 13CH2 13CN in ALMA data. The main objective of this work is to provide accurate frequency predictions to search for this molecule in the Galactic center source Sagittarius B2(N) and to facilitate its detection in space. The laboratory rotational spectrum of 13CH3 13CH2 13CN has been recorded with the Lille's fast DDS solid-state spectrometer between 150GHz and 990GHz. Results. More than 4000 rotational transitions were identified in the laboratory. The quantum numbers reach J=115 and Ka=39. Watson's Hamiltonian in the A and S reductions were used to analyze the spectra. Accurate spectroscopic parameters were determined. The rotational spectra of the 13C containing species CH3CH2CN have been assigned, thus allowing the determination of the rotational and centrifugal distortion constants. Description: Table 3 contains assigned rotational transitions of the ground state of triple-13C isotopologue of ethyl cyanide, 13CH3 13CH2 13CN. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 72 6014 Assigned rotational transitions of the ground state of triple-13C isotopologue of ethyl cyanide
See also: J/A+A/493/565 : Deuterated and 15N ethyl cyanides (Margules+, 2009) J/A+A/500/1109 : Rotational spectrum of HCOO13CH3 (Carvajal+, 2009) J/A+A/538/A51 : Rotational spectrum of CH3CH(NH2)CN (Mollendal+, 2012) J/A+A/538/A119 : Spectrum of 18O-methyl formate HCO18OCH3 (Tercero+ 2012) J/A+A/540/A51 : Submm spectrum of deuterated glycolaldehydes (Bouchez+, 2012) J/A+A/543/A46 : Submillimeter spectrum of HCOOCD2H (Coudert+, 2012) J/A+A/543/A135 : New analysis of 13C-CH3CH2CN up to 1THz (Richard+, 2012 J/A+A/544/A82 : Rotational spectroscopy of diisocyanomethane (Motiyenko+ 2012) J/A+A/548/A71 : Spectroscopy and ISM detection of formamide (Motiyenko+, 2012) J/A+A/549/A96 : mm and sub-mm spectra of 13C-glycolaldehydes (Haykal+, 2013) J/A+A/549/A128 : Singly deuterated isotopologues of formamide (Kutsenko+, 2013) J/A+A/552/A117 : Mono-deuterated dimethyl ether (Richard+, 2013) J/A+A/553/A84 : (Sub)mm spectrum of deuterated methyl cyanides (Nguyen+, 2013) J/A+A/559/A44 : Rotational spectrum of MAAN (CH2NCH2CN) (Motiyenko+, 2013) J/A+A/563/A137 : THz spectrum of methylamine (Motiyenko+, 2014) J/A+A/568/A58 : HCOO13CH3 rotational spectrum (Haykal+, 2014) J/A+A/579/A46 : Mono13C acetaldehydes mm/submm wave spectra (Margules+ 2015) J/A+A/587/A152 : Rotational spectrum of 13C methylamine (Motiyenko+, 2016) J/A+A/591/A110 : 15NH2 amidogen radical rotational spectrum (Margules+, 2016) J/A+A/592/A43 : Millimeter wave spectra of carbonyl cyanide (Bteich+, 2016) J/A+A/590/A93 : Doubly 13C-substituted ethyl cyanide (Margules+, 2016) Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 4 A4 --- S [g.s.] State identifier (ground state) 6- 8 I3 --- J' Upper J quantum number 11- 12 I2 --- Ka' Upper Ka quantum number 14- 16 I3 --- Kc' Upper Kc quantum number 18- 20 I3 --- J" Lower J quantum number 23- 24 I2 --- Ka" Lower Ka quantum number 26- 28 I3 --- Kc" Lower Kc quantum number 34- 44 F11.4 MHz Freq Observed transition frequency 49- 56 F8.5 MHz O-C Residuals of the fit 59- 64 F6.4 MHz unc Uncertainty of measurements 67- 72 F6.4 --- RelI ? Relative intensity for blended line components
Acknowledgements: Anastasia Pienkina, anastasia.pienkina(at)
(End) Anastasia Pienkina [PhLAM, Lille 1], Patricia Vannier [CDS] 13-Feb-2017
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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