The C=C stretch frequency of an isolated c=C bond is normally ~1620 cm-1. The C=C stretch frequencies foran aromatic ring are typically found between 1450 and 1600 cm-1. Explain why the frequencies are lower in anaromatic ring.

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Answered: The C=C stretch frequency of an…

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

ChapterL3: Carbon (13c) Nmr Spectroscopy

Section: Chapter Questions

Problem 2CTQ

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The C=C stretch frequency of an isolated c=C bond is normally ~1620 cm-1. The C=C stretch frequencies for an aromatic ring are typically found between 1450 and 1600 cm-1. Explain why the frequencies are lower in an aromatic ring.