Which structure is consistent with both of these IR and 'H NMR data? IR, cm (intensity) H NMR, ppm (splitting, H): 2965 (strong), 1745 (strong), 1238 (strong) 0.94 (doublet, 6H), 193 (multiplet, 1H), 2.05 (singlet, 3H), 3.85 (doublet, 2H) lay. la
Which structure is consistent with both of these IR and 'H NMR data? IR, cm (intensity) H NMR, ppm (splitting, H): 2965 (strong), 1745 (strong), 1238 (strong) 0.94 (doublet, 6H), 193 (multiplet, 1H), 2.05 (singlet, 3H), 3.85 (doublet, 2H) lay. la
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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
(Sample structure showing a potential match for given spectra)
2. 
(Sample structure showing a potential match for given spectra)
3. 
(Sample structure showing a potential match for given spectra)
4. 
(Sample structure showing a potential match for given spectra)
**Analysis:**
Using Infrared (IR) Spectroscopy and Nuclear Magnetic Resonance (NMR), we can determine the structure of an unknown compound based on provided spectral data:
- **Infrared Spectroscopy (IR):**
- **2965 cm⁻¹:** This peak typically indicates the presence of C-H stretching in alkanes.
- **1745 cm⁻¹:** This is indicative of a carbonyl group (C=O), common in aldehydes, ketones, and esters.
- **1238 cm⁻¹:** This often corresponds to C-O stretching vibrations, found in esters or ethers.
- **Proton Nuclear Magnetic Resonance (^1H NMR):**
- **0.94 ppm (doublet, 6H):** This splitting pattern suggests the presence of two equivalent CH₃ groups adjacent to a CH group.
- **1.93 ppm (multiplet, 1H):** A complex splitting pattern indicating the presence of a methine (CH) group coupled to multiple neighbors.
- **2.05 ppm (singlet, 3H):** A](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F650638ef-17d9-4755-bd2c-89f9558934a8%2F252d5e86-b682-4b1f-a44a-ceb6035f532a%2Fcp7j47n_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**IR and NMR Data Interpretation - Which structure matches the spectral data?**
---
**Question:**
Which structure is consistent with both of these IR and ^1H NMR data?
**Data:**
- **IR (cm⁻¹, intensity):**
- 2965 (strong)
- 1745 (strong)
- 1238 (strong)
- **^1H NMR, ppm (splitting, #H):**
- 0.94 (doublet, 6H)
- 1.93 (multiplet, 1H)
- 2.05 (singlet, 3H)
- 3.85 (doublet, 2H)
**Options:**
1. 
(Sample structure showing a potential match for given spectra)
2. 
(Sample structure showing a potential match for given spectra)
3. 
(Sample structure showing a potential match for given spectra)
4. 
(Sample structure showing a potential match for given spectra)
**Analysis:**
Using Infrared (IR) Spectroscopy and Nuclear Magnetic Resonance (NMR), we can determine the structure of an unknown compound based on provided spectral data:
- **Infrared Spectroscopy (IR):**
- **2965 cm⁻¹:** This peak typically indicates the presence of C-H stretching in alkanes.
- **1745 cm⁻¹:** This is indicative of a carbonyl group (C=O), common in aldehydes, ketones, and esters.
- **1238 cm⁻¹:** This often corresponds to C-O stretching vibrations, found in esters or ethers.
- **Proton Nuclear Magnetic Resonance (^1H NMR):**
- **0.94 ppm (doublet, 6H):** This splitting pattern suggests the presence of two equivalent CH₃ groups adjacent to a CH group.
- **1.93 ppm (multiplet, 1H):** A complex splitting pattern indicating the presence of a methine (CH) group coupled to multiple neighbors.
- **2.05 ppm (singlet, 3H):** A
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