Fermi resonance: Difference between revisions

High resolution IR spectra of most [[ketone]]s reveal that the "carbonyl band" is split into a doublet. The peak separation is usually only a few cm⁻¹. This splitting arises from the mixing of ν_CO and the overtone of HCH bending modes.<ref>Robert M. Silverstein, Francis X. Webster, David Kiemle “Spectrometric Identification of Organic Compounds”Edition: 7th ed., John Wiley & Sons, 2005. ISBN 0-471-39362-2.</ref>