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Infrared absorption of methyl cis ‐9, trans ‐11‐, and trans ‐10, cis ‐12‐octadecadienoates
Author(s) -
Scholfield C. R.
Publication year - 1974
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02545212
Subject(s) - molar absorptivity , absorption (acoustics) , cis–trans isomerism , chemistry , stereochemistry , physics , optics
The ratio of absorptivity at 10.2 µm and 10.6 µm differs between methyl cis ‐9, trans ‐11‐, and trans ‐10, cis ‐12‐octadecadienoates. For the cis ‐9, trans ‐11‐ester, a 10.2 µm/a 10.6 µm is in the range of 1.1–1.2; for the trans ‐10, cis ‐12‐ester, it is 1.3–1.4. These differences in absorptivities are great enough to affect significantly compositions calculated from IR absorption.
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