J/A+A/559/A44 Rotational spectrum of MAAN (CH2NCH2CN) (Motiyenko+, 2013)
The millimeter and submillimeter-wave spectrum of methyleneaminoacetonitrile.
Motiyenko R. A., Margules L., Guillemin J.-C.
<Astron. Astrophys. 559, A44 (2013)>
=2013A&A...559A..44M 2013A&A...559A..44M
ADC_Keywords: Atomic physics ; Interstellar medium ; Millimetric/submm sources
Keywords: ISM: molecules - methods: laboratory: molecular -
submillimeter: ISM - molecular data - line: identification
Abstract:
Aminoacetonitrile has been detected in the interstellar medium and the
Strecker-type synthesis is considered as one of its possible
mechanisms of formation in this medium. Methyleneaminoacetonitrile
(CH2=N-CH2-CN, MAAN) is one of the by-products of the Strecker
reaction and a good candidate for astrophysical detection.
Rotational spectrum of MAAN has never been studied before. To provide
the basis for the detection of MAAN in the interstellar medium we
studied its millimeter and submillimeter-wave spectrum.
The rotational spectrum of MAAN was measured in the frequency range
120-600GHz. The spectroscopic study was supported by theoretical
calculations of the molecular structure and harmonic force field.
The ground and two lowest excited vibrational states of the most
stable synperiplanar conformation of MAAN were assigned and analyzed.
Obtained sets of rotational constants allows us to make accurate
predictions of transition frequencies of MAAN in the frequency range
up to 900GHz.
Description:
We provide a table containing the complete list of measured rotational
transitions of the ground and two lowest excited vibrational states in
millimeter and submillimeter-wave range. The tables includes line
assignments, observed frequencies, residuals of the fits using
A-reduction of the Watson's Hamiltonian and accuracy of frequency
measurement.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 63 4420 Assigned rotational transitions of the ground and
two lowest excited vibrational states of MAAN
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See also:
J/A+A/493/565 : Deuterated and 15N ethyl cyanides (Margules+, 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 : The mm & 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)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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2- 3 I2 --- J" [5/97] Upper J quantum number
5- 6 I2 --- Ka" [0/41] Upper Ka quantum number
8- 9 I2 --- Kc" [0/97] Upper Kc quantum number
11- 12 I2 --- v" [0/2] Upper v quantum number
15- 16 I2 --- J' [4/96] Lower J quantum number
18- 19 I2 --- Ka [0/41] Lower Ka quantum number
21- 22 I2 --- Kc' [0/96] Lower Kc quantum number
24- 25 I2 --- v' [0/2] Lower v quantum number
29- 39 F11.4 MHz Freq [75000/590000] Observed transition frequency
42- 48 F7.4 MHz O-C [-1.2/0.2] Residuals of the fit
51- 55 F5.3 MHz Error [0.03/0.1] Uncertainty of measurements
60- 63 F4.2 --- Irel ? Relative intensity for blended line components
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Acknowledgements:
Roman Motiyenko, roman.motienko(at)univ-lille1.fr
(End) Roman Motiyenko [PhLAM, Lille 1], Patricia Vannier [CDS] 20-Sep-2013