The image below shows a portion of a 'H NMR spectrum (ppm). Choose the partial structure that best fits this data. 3.0 A) CH3-CH,-CH2-O- B) CH3-CH,-CH, C=O C) CH3-CH2-CH-O D) (CH3)2-CH- E) (CH3)2-CH-O

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**Transcription and Analysis of \( ^1H \) NMR Spectrum**

*The image below shows a portion of a \( ^1H \) NMR spectrum (ppm).*

Choose the partial structure that best fits this data.

**Graph Description:**
- The x-axis represents the chemical shift in parts per million (ppm).
- There are three distinct sets of peaks displayed in the spectrum.

1. **Peak at ~3.6 ppm**: 
   - This multiplet suggests a CH group possibly adjacent to electronegative atoms or groups.

2. **Peak at ~2.1 ppm**: 
   - This smaller set of peaks suggests a more saturated environment, possibly a CH2 group adjacent to the CH from the previous peak.

3. **Peak at ~1.0 ppm**: 
   - This large set of peaks is indicative of a terminal CH3 group, representing a typical chemical shift for such protons.

**Structure Options:**
- A) \( \text{CH}_3\text{-CH}_2\text{-CH}_2\text{-O-} \)
- B) \( \text{CH}_3\text{-CH}_2\text{-CH}_2\text{-C=O} \)
- C) \( \text{CH}_3\text{-CH}_2\text{-CH-O} \)
- D) \( (\text{CH}_3)_2\text{-CH-} \)
- E) \( (\text{CH}_3)_2\text{-CH-O} \)

As each structure is analyzed, observe how the data aligns with the peaks in the NMR spectrum. This information will help determine which partial structure fits the observed data best.
Transcribed Image Text:**Transcription and Analysis of \( ^1H \) NMR Spectrum** *The image below shows a portion of a \( ^1H \) NMR spectrum (ppm).* Choose the partial structure that best fits this data. **Graph Description:** - The x-axis represents the chemical shift in parts per million (ppm). - There are three distinct sets of peaks displayed in the spectrum. 1. **Peak at ~3.6 ppm**: - This multiplet suggests a CH group possibly adjacent to electronegative atoms or groups. 2. **Peak at ~2.1 ppm**: - This smaller set of peaks suggests a more saturated environment, possibly a CH2 group adjacent to the CH from the previous peak. 3. **Peak at ~1.0 ppm**: - This large set of peaks is indicative of a terminal CH3 group, representing a typical chemical shift for such protons. **Structure Options:** - A) \( \text{CH}_3\text{-CH}_2\text{-CH}_2\text{-O-} \) - B) \( \text{CH}_3\text{-CH}_2\text{-CH}_2\text{-C=O} \) - C) \( \text{CH}_3\text{-CH}_2\text{-CH-O} \) - D) \( (\text{CH}_3)_2\text{-CH-} \) - E) \( (\text{CH}_3)_2\text{-CH-O} \) As each structure is analyzed, observe how the data aligns with the peaks in the NMR spectrum. This information will help determine which partial structure fits the observed data best.
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