The infrared and Raman spectra in the carbonyl stretching region have been recorded for a number of molecules of the pyruvate series. The data are compared with previously published data for the oxalate series. Analysis of these spectra indicates that there is little or no electronic interaction between the two unsaturated centers. It is therefore concluded that each carbonyl stretching mode in the infrared spectra of the pyruvate series reflects its own particular functionality.
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2.
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3.
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4.
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