17) The partial chemical structure and ¹H NMR spectrum of 2-propanol (C3H80) are in the hydrogen atoms and label them with a subscript that corresponds to the labeled peaks in the ¹H NMR spectrum. Provide a brief rationale for your structural assignments. 11 10 9 8 7 6 Peak 1: 4.01 ppm 1H Septet T 5 1 4 Peak 2: 2.16 ppm 1H Singlet 3 Peak 3: 1.20 ppm 6H Doublet HSP-03-214 ppm Rationale for peak assignments in structure: 2 1 0 Draw in labeled hydrogen atoms (H₁, H₂, H3) and assign them to peaks 1-3 H 2 C Structure of 2-propanol -H 11.1

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**1H NMR Analysis of 2-Propanol (C₃H₈O)**

**Question 17:**

The partial chemical structure and ¹H NMR spectrum of 2-propanol (C₃H₈O) are shown. Draw in the hydrogen atoms and label them with a subscript that corresponds to the labeled peaks in the ¹H NMR spectrum. Provide a brief rationale for your structural assignments.

### NMR Spectrum Details:

- **Peak 1:** 
  - Chemical shift: 4.01 ppm
  - Integration: 1H
  - Splitting pattern: Septet

- **Peak 2:** 
  - Chemical shift: 2.16 ppm
  - Integration: 1H
  - Splitting pattern: Singlet

- **Peak 3:** 
  - Chemical shift: 1.20 ppm
  - Integration: 6H
  - Splitting pattern: Doublet

### Structure of 2-Propanol:

- Hydrogen atoms labeled as H₁, H₂, and H₃:

  ```
          H₁
           |
   H₃  -  C  -  H₃
          |
   H₂  -  C  -  C  -  H₃
           |
          H₃
  ```

### Rationale for Peak Assignments:

- **Peak 1 (4.01 ppm):** Assigned to H₂, which is the hydrogen on the carbon bonded to the oxygen. This environment leads to a higher chemical shift due to the electron-withdrawing effect of the oxygen. The septet pattern results from coupling with the adjacent six hydrogen atoms (H₃).

- **Peak 2 (2.16 ppm):** Assigned to OH proton. The singlet pattern arises because this proton typically does not couple with adjacent protons.

- **Peak 3 (1.20 ppm):** Assigned to H₃, the hydrogens on the terminal methyl groups. The lower chemical shift is typical for hydrogens far from electronegative atoms. The doublet arises from coupling with a single adjacent hydrogen (H₂).

**Graph Explanation:**

The NMR spectrum graph shows intensity (y-axis) versus chemical shift in ppm (x-axis). Each peak corresponds to distinct hydrogen environments within the 2-propanol molecule, with integration values indicating the number of
Transcribed Image Text:**1H NMR Analysis of 2-Propanol (C₃H₈O)** **Question 17:** The partial chemical structure and ¹H NMR spectrum of 2-propanol (C₃H₈O) are shown. Draw in the hydrogen atoms and label them with a subscript that corresponds to the labeled peaks in the ¹H NMR spectrum. Provide a brief rationale for your structural assignments. ### NMR Spectrum Details: - **Peak 1:** - Chemical shift: 4.01 ppm - Integration: 1H - Splitting pattern: Septet - **Peak 2:** - Chemical shift: 2.16 ppm - Integration: 1H - Splitting pattern: Singlet - **Peak 3:** - Chemical shift: 1.20 ppm - Integration: 6H - Splitting pattern: Doublet ### Structure of 2-Propanol: - Hydrogen atoms labeled as H₁, H₂, and H₃: ``` H₁ | H₃ - C - H₃ | H₂ - C - C - H₃ | H₃ ``` ### Rationale for Peak Assignments: - **Peak 1 (4.01 ppm):** Assigned to H₂, which is the hydrogen on the carbon bonded to the oxygen. This environment leads to a higher chemical shift due to the electron-withdrawing effect of the oxygen. The septet pattern results from coupling with the adjacent six hydrogen atoms (H₃). - **Peak 2 (2.16 ppm):** Assigned to OH proton. The singlet pattern arises because this proton typically does not couple with adjacent protons. - **Peak 3 (1.20 ppm):** Assigned to H₃, the hydrogens on the terminal methyl groups. The lower chemical shift is typical for hydrogens far from electronegative atoms. The doublet arises from coupling with a single adjacent hydrogen (H₂). **Graph Explanation:** The NMR spectrum graph shows intensity (y-axis) versus chemical shift in ppm (x-axis). Each peak corresponds to distinct hydrogen environments within the 2-propanol molecule, with integration values indicating the number of
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