Abstract
THE region 900–1,000 cm.−1 of the infra-red spectrum of organic molecules is useful for characterizing the type of unsaturation that may be present. This region is associated with the bending frequencies of hydrogen attached to an olefinic carbon. Thus the groups 
give rise to characteristic bands at 909–916 cm.−1 and 964–979 cm.−1 respectively1.
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CHAPMAN, D., TAYLOR, R. Infra-Red Assignments of Unsaturation in the Region 900–1,000 cm.−1. Nature 174, 1011–1012 (1954). https://doi.org/10.1038/1741011b0
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DOI: https://doi.org/10.1038/1741011b0
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