K. Todori, K. Sano, Mori Yasushi
Jun 1, 1994
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Journal
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
Abstract
Abstract X-ray analysis of two polymorphs of 2-cyano-3-(3,4-methylenedioxyphenyl)-2-propenoic acid ethyl-ester revealed the difference of cis—trans conformation of cyano group to carbonyl group through the fixed single bond. This difference affected the carbonyl group to the extent of 20 cm −1 shift in vibration and Raman spectrum.