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Infrared and Raman spectra of several examples of each of three classes of cyclic imides have been examined. Spectra-structure correlations have been sought for each of the classes, with particular emphasis being placed on the 1600–1800 cm −1 region. The spectra in this region are often complex, reflecting subtle structural features in the condensed phases. Group frequencies for substituted succinimides, phthalimides, and maleimides are proposed.
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McKittrick et al. (1990) studied this question.
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