Chemical and Physical Effects Upon Carbonyl Stretching Frequencies: Ketones

Authors: Nyquist, R.A.; Chrzan, V.; Houck, J.

Source: Applied Spectroscopy, Volume 43, Issue 6, Pages 899-1104 (August 1989) , pp. 981-983(3)

Publisher: Society for Applied Spectroscopy

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Abstract:

The carbonyl stretching frequencies for a series of ketones occur at a lower frequency in dimethyl sulfoxide solution than in carbon tetrachloride solution, and occur at intermediate frequencies depending upon the mole percent ratio (CH₃)₂SO/CCl₄. Ketones of form (CH₃)₂C=O, ϕ(C=O)CH₃, and (ϕ)₂C=O exhibit carbonyl stretching frequencies which are affected in the same manner by solvent effects. In general, inductive and resonance effects play an important role in determining the unperturbed carbonyl stretching frequencies of ketones.

Keywords: Infrared; Molecular structure; Solvent effects; Ketones; Group frequencies

Document Type: Research article

DOI: http://dx.doi.org/10.1366/0003702894203868

Affiliations: 1: Analytical Sciences Laboratory, 1897 Building, Dow Chemical Company, Midland, Michigan 48667

Publication date: 1989-08-01

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