Fragmentation patterns can be helpful in distinguishing constitutional isomers. The many isomers of C11H140 include compounds with an aromatic ring and a carbonyl group. One isomer has a strong IR absorption peak at 1700 cm¯1. 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 II B) II C) II IV D) IV
Fragmentation patterns can be helpful in distinguishing constitutional isomers. The many isomers of C11H140 include compounds with an aromatic ring and a carbonyl group. One isomer has a strong IR absorption peak at 1700 cm¯1. 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 II B) II C) II IV D) IV
Chemistry
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Chapter1: Chemical Foundations
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
Transcribed Image Text:**Title: Distinguishing Constitutional Isomers Using Fragmentation Patterns**
Fragmentation patterns can be helpful in distinguishing constitutional isomers. The many isomers of C₁₁H₁₄O include compounds with an aromatic ring and a carbonyl group.
One isomer has a strong IR absorption peak at 1700 cm⁻¹. 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.
**Question:**
Which structure is most consistent with this data?
**Structures:**
- I
- II
- III
- IV
**Options:**
- A) I
- B) II
- C) III
- D) IV
**Explanation of Diagram:**
The diagram shows four different structural isomers labeled I, II, III, and IV, each containing an aromatic ring and a carbonyl group. You need to choose which structure aligns with the provided spectrometric data.
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