Raman spectra of iodine derivatives of tyrosine and thyronine

✍ Scribed by Eugene Loh

• Publisher: John Wiley and Sons
• Year: 1975
• Tongue: English
• Weight: 346 KB
• Volume: 3
• Category: Article
• ISSN: 0377-0486
• DOI: 10.1002/jrs.1250030403

✦ Synopsis

Abstract

The Raman spectra of iodine derivatives of tyrosine and thyronine exhibit strong peaks in the region ≲400 cm^−1^ and may be described by analogous vibrations of benzene as:

the C—I out‐of‐plane bendings of E~1__g__~ mode from 120 cm^−1^ to 180 cm^−1^

the C—I in‐plane bendings of E~2__g__~ and A~2__g__~ mode from 190 cm^−1^ to 330 cm^−1^ and

the C—I stretchings of E~2__g__~ mode from 240 cm^−1^ to 400 cm^−1^

In triiodo‐derivatives, the number of both the CI in‐plane bendings and CI stretchings on the inner phenyl ring approximately doubles from that of diiodo‐derivatives presumably due to the modulation caused by the iodine‐sensitive libration of the outer phenyl ring.