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When a Carbonyl Is Part of a Conjugated π-Network, the C-O

Question 43

Multiple Choice

When a carbonyl is part of a conjugated π-network, the C-O stretch:


A) has a higher frequency than in a nonconjugated system.
B) has a lower frequency than in a nonconjugated system.
C) always occurs at 1710 cm-1.
D) occurs around 2700 cm-1.
E) cannot be distinguished from the C-O stretch in a nonconjugated system.

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