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Torsional overtones of dimethyl-ether

AuthorsSenent, María Luisa ; Carvajal, Miguel; Fernández Sánchez, José María ; Tejeda, Guzmán
Issue Date27-Feb-2019
Citation4th Cost Molim General Meeting (20019)
AbstractDimethyl-ether (DME) was found in star-forming regions, where it plays an important role in astrochemical processes [1]. Despite this astrophysical interest, there is a lack of accurate spectral data of its isotopic species, which makes difficult further identification in the interstellar medium. The absorption spectrum of DME is quite dense and its analysis challenging because DME is an asymmetric top molecule with two internal rotors undergoing large amplitude motions. Thus, understanding such large amplitude internal motions on a quantitative level rely on quantum chemical models validated by laboratory data. However, one of the torsional bands is forbidden in the infrared spectra, that preventing the experimental determination of some of the interaction parameters.
DescriptionDipartimento di Chimica >Giacomo Ciamician>, Universit� di Bologna, Via F. Selmi, 2 Bologna, Italy, February 27th - March 1st, 2019
Appears in Collections:(CFMAC-IEM) Comunicaciones congresos
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