Fragmentation patterns can be helpful in distinguishing constitutional isomers. The many isomers of C,H,O include compounds with an aromatic ring and a carbonyl group. One isomer has a strong IR absorption peak at 1700 cm¹. The mass spectrum shows the molecular ion M at m/z 162, while the base peak occurs at m/z = 147. Another significant peak is seen at m/z = 43. Which structure is most consistent with this data?

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Fragmentation patterns can be helpful in distinguishing constitutional isomers.
The many isomers of C,H,O include compounds with an aromatic ring and a
carbonyl group.
One isomer has a strong IR absorption peak at 1700 cm¹.
The mass spectrum shows the molecular ion M at m/z 162, while the base peak
occurs at m/z = 147. Another significant peak is seen at m/z = 43.
Which structure is most consistent with this data?
A) I
B) II
C) III
D) IV
Transcribed Image Text:Fragmentation patterns can be helpful in distinguishing constitutional isomers. The many isomers of C,H,O include compounds with an aromatic ring and a carbonyl group. One isomer has a strong IR absorption peak at 1700 cm¹. The mass spectrum shows the molecular ion M at m/z 162, while the base peak occurs at m/z = 147. Another significant peak is seen at m/z = 43. Which structure is most consistent with this data? A) I B) II C) III D) IV
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