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

Question 35

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 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<sup>-1</sup> D) occurs around 2700 cm<sup>-1</sup> E) cannot be distinguished from the C O stretch in a nonconjugated system O stretch in a nonconjugated system