Rotational spectrum of trans–trans diethyl ether in the ground and three excited vibrational states

Kisiel, Zbigniew; Pszczółkowski, L.; Medvedev, Ivan R.; Winnewisser, M.; Lucia, Frank C. De; Herbst, Eric

doi:10.1016/j.jms.2005.07.006

Cited by 260 publications

(214 citation statements)

References 17 publications

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“…For all the isotopic species considered in the present study, the analysis has been carried out by comparing graphical representations of the calculated spectra to the observed ones [49]. For predicting the hyperfine pattern of the rotational spectra due to the bromine nucleus, we generally used the experimental rotational constants (from Refs.…”

Section: Analysis Of the Spectramentioning

confidence: 99%

The hyperfine structure in the rotational spectra of bromofluoromethane: Lamb-dip technique and quantum-chemical calculations

et al. 2008

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Section: Analysis Of the Spectramentioning

confidence: 99%

The hyperfine structure in the rotational spectra of bromofluoromethane: Lamb-dip technique and quantum-chemical calculations

et al. 2008

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“…The FFTS program contains many different FFT transformation and diagnostic options, as well as features for integrating chirped pulse measurements with the AABS package for Assignment and Analysis of Broadband Spectra [23,24]. The importance of a suitable FFT transformation mode has been demonstrated in [11] where it was shown that the optimum approach for very high signal to noise (S/N) chirped pulse spectra with lines differing by many orders of magnitude in intensity is to use the Kaiser-Bessel windowing function.…”

Section: The Computer Program Fftsmentioning

confidence: 99%

Identification of Trace 2-Chloropropene with a New Chirped Pulse Microwave Spectrometer

Kisiel

Kosarzewski

2017

Acta Phys. Pol. A

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The design of a new chirped pulse, Fourier-transform microwave spectrometer for recording broadband rotational spectra of supersonic expansion samples is described. The spectrometer can record spectral windows of width of up to 2.2 GHz over the 2-18 GHz frequency region. It is complemented by a new FFT program with several novel features. Tests of the spectrometer revealed the presence of an initially unknown volatile trace molecule in a sample of 2,2-dichloropropane (DCP). The broadband nature of the new spectrometer allowed rapid assignment of the new species as 2-chloropropene, CH3CCl=CH2 (2CP). Additional mm wave measurements combined with analysis of previous DCP spectra up to 311 GHz allow us to report the hitherto most precise spectroscopic constants for 2CP.

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“…The millimeter wave spectrum of vinyl acetate exhibits higher line density than CP-FTMW spectrum not only because of the higher J and K a transitions from the v t = 0 state, but also from the lowlying excited vibrational states sufficiently populated at the room temperature of the experiment. Loomis-Wood-type plots in the AABS package (Kisiel et al 2005) were used to guide a search of both A and E lines. An example of this plot is shown in Fig.…”

Section: Spectroscopic Analysismentioning

confidence: 99%

“…3. Loomis-Wood-type plot obtained from the AABS programs package (Kisiel et al 2005) showing the identification of the stripes corresponding to the K a ← K a sequences of the b-type R-branch transitions for K a = 0, 1, 2, 3, and 4. Each sequence has two components, A and E, due to the methyl internal rotation.…”

Section: Iram 30 M Datamentioning

confidence: 99%

Laboratory millimeter wave spectrum and astronomical search for vinyl acetate

Kolesníková

Peña

Alonso

et al. 2015

A&A

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Context. The recent discovery of methyl acetate in Orion KL makes vinyl acetate, CH 3 C=OOCH=CH 2 , a potential molecule in the interstellar medium. We obtained very accurate spectroscopic constants in a comprehensive laboratory analysis of its rotational spectra which can be used to predict those transition frequencies towards interstellar sources. Aims. We present the experimental study and theoretical analysis of the ground torsional state of vinyl acetate in a large spectral range for astrophysical use. Methods. The room-temperature rotational spectrum of vinyl acetate has been measured from 125 to 305 GHz to provide direct frequencies to the astronomical community. Additional measurements have also been made using a broadband CP-FTMW spectrometer in the region of 6−18 GHz. Transition lines, corresponding to the most stable conformer, have been observed and assigned. All the rotational transitions revealed the A-E splitting due to the methyl internal rotation and had to be treated with a specific internal rotation code (BELGI-Cs). Results. We analyzed 2508 transitions up to J = 75 for v t = 0 for the most stable conformer of vinyl acetate. The new lines were globally fitted with previously published data and 24 parameters of the Hamiltonian were accurately determined. The spectral features of vinyl acetate were then searched for in Orion KL. Using the whole line survey of Orion KL (80−280 GHz) obtained with the IRAM 30 m radio telescope we can provide only an upper limit to the column density of vinyl acetate. However, using the ALMA science verification data we obtain a tentative detection of this species that will require further search at other frequencies to confirm its presence in this high mass star forming region.

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Rotational spectrum of trans–trans diethyl ether in the ground and three excited vibrational states

Cited by 260 publications

References 17 publications

The hyperfine structure in the rotational spectra of bromofluoromethane: Lamb-dip technique and quantum-chemical calculations

The hyperfine structure in the rotational spectra of bromofluoromethane: Lamb-dip technique and quantum-chemical calculations

Identification of Trace 2-Chloropropene with a New Chirped Pulse Microwave Spectrometer

Laboratory millimeter wave spectrum and astronomical search for vinyl acetate

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