Details

Autor(en) / Beteiligte

• Jelisavac, D.
• Cortés Gómez, D.C.
• Nguyen, H.V.L.
• Sutikdja, L.W.
• Stahl, W.
• Kleiner, I.

Titel

The microwave spectrum of the trans conformer of ethyl acetate

Ist Teil von

• Journal of molecular spectroscopy, 2009-10, Vol.257 (2), p.111-115

Ort / Verlag

Elsevier Inc

Erscheinungsjahr

2009

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The Fourier transform microwave spectrum of ethyl acetate has been measured under molecular beam conditions. The trans conformer, where all heavy atoms are located within a mirror plane, was identified after analyzing the spectrum by comparison with theoretical calculations. The barrier to internal rotation of the acetate methyl group was found to be only 99.57(11) cm −1 whereas for methyl torsion in the ethyl group a barrier of 1112.3(37) cm −1 was determined. A comparison between two theoretical approaches treating the internal rotation, the so-called RAM (Rho Axis Method) and CAM (Combined Axis Method), is also performed.