Infrared Absorption of the Carbonyl Group of Semicarbazides, Semicarbazones, and Pyrazolecarboxamides
Abstract:The carbonyl frequency in semicarbazides, semicarbazones, and pyrazolecarboxamides is higher than that in ureas. A phenyl group attached to the third nitrogen atom of semicarbazides lowers the carbonyl frequency. A phenyl group substituted on the first nitrogen atom shifts the carbonyl absorption in semicarbazides to a higher frequency region than do alkyl groups.
Document Type: Research Article
Affiliations: Diamond Shamrock Corporation, T. R. Evans Research Center, P. O. Box 348, Painesville, Ohio 44077
Publication date: May 1, 1968
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