Add time:07/30/2019         Source:sciencedirect.com

The Raman and infra-red spectra of a series of aliphatic and aromatic isothiocyanates (mustard oils) have been measured. Analysis of the spectra enables two frequencies to be identified for each compound which are characteristic of an aliphatic or an aromatic NCS grouping. It is shown why the complex structure of the strong band near 2100 cm−1 is peculiar to the isothiocyanates and why its contour is different for the aliphatic and aromatic isothiocyanates. Infra-red intensity measurements on this band are also reported.

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