THE NORMAL MODES OF CYCLOPROPENONE

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/16549

Files Size Format View
1974-WH-07.jpg 169.9Kb JPEG image

 Title: THE NORMAL MODES OF CYCLOPROPENONE Creators: Tuazon, E. C.; Miller, Foil A. Issue Date: 1974 Publisher: Ohio State University Abstract: The C = C stretching frequencies of cyclopropenone and cyclopropenone-$d_{2}$ present [FIGURE] a puzzling problem. They are presumably the very intense and strongly polarized Raman bands at 1480 and 1409 $cm^{-1}$, respectively. These unusually low values are in sharp contrast to those observed when the substituents are methyl, chloro, of phenyl, for then the C = C frequencies are in the normal” range of $1620 - 1680 cm^{-1}$. The low values for H and D raise a question about the proper description of the normal mode involved in these cases. A normal coordinate analysis of cyclopropenone-$d_{0}$ and $-d_{2}$ has been carried out, and the potential energy distribution has been determined for each of the twelve normal modes of each molecule. The discussion will concentrate on the answer to the above problem. Description: Author Institution: Department of Chemistry, University of Pittsburgh URI: http://hdl.handle.net/1811/16549 Other Identifiers: 1974-WH-7