Title of article :
Additional conformer observed in the microwave spectrum of methyl vinyl ketone
Author/Authors :
Wilcox، نويسنده , , David S. and Shirar، نويسنده , , Amanda J. and Williams، نويسنده , , Owen L. and Dian، نويسنده , , Brian C.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2011
Pages :
7
From page :
10
To page :
16
Abstract :
A chirped-pulse Fourier transform microwave spectrometer was used to record the rotational spectrum of methyl vinyl ketone (MVK, 3-butene-2-one). Two stable conformations were identified: the previously documented antiperiplanar (ap) conformer and synperiplanar (sp), which is reported for the first time in this microwave study. Methyl torsional analysis resulted in V3 barrier heights of 433.8(1) and 376.6(2) cm−1 for ap- and sp-MVK, respectively. Heavy atom isotopic species of both conformers were detected in natural abundance allowing bond lengths and angles of the molecular frames to be calculated through Kraitchman analysis. A comparison with ab initio calculations is included.
Journal title :
Chemical Physics Letters
Serial Year :
2011
Journal title :
Chemical Physics Letters
Record number :
1931286
Link To Document :
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