An IR spectrum, a ¹³C NMR spectrum, and a ¹H NMR spectrum were obtained for an unknown structure. Draw the structure of this compound. 4000 3000 T 2000 Wavenumber (cm'¹) 1500 1000 500

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**Title: Analyzing Spectra for Unknown Compound Identification**

**Text:**
An IR spectrum, a \(^{13}C\) NMR spectrum, and a \(^{1}H\) NMR spectrum were obtained for an unknown structure. Draw the structure of this compound.

**IR Spectrum Analysis:**

The graph above displays the IR spectrum for the unknown compound. It plots transmittance against wavenumber (cm\(^{-1}\)).

- **Wavenumber Range:** The x-axis covers wavenumbers from 4000 cm\(^{-1}\) to 500 cm\(^{-1}\).
- **Significant Peaks:**
  - There is a notable peak near 3300 cm\(^{-1}\), likely indicating an O-H or N-H bond.
  - Peaks around 2900 cm\(^{-1}\) may suggest C-H stretching.
  - Strong absorptions near 1700 cm\(^{-1}\) could correspond to C=O stretching, indicating the presence of a carbonyl group.
  - Additional peaks between 1500 cm\(^{-1}\) to 1000 cm\(^{-1}\) might represent various C-C, C-N, or C-O stretches or bends.

**Description for Educational Context:**

This spectrum is used to identify functional groups in a compound. By analyzing the specific absorption peaks, we can infer the presence of different chemical bonds and use this information in conjunction with \(^{13}C\) and \(^{1}H\) NMR data to determine the molecular structure. Understanding and interpreting such spectra are fundamental skills in organic chemistry, helping to elucidate complex molecular architectures.
Transcribed Image Text:**Title: Analyzing Spectra for Unknown Compound Identification** **Text:** An IR spectrum, a \(^{13}C\) NMR spectrum, and a \(^{1}H\) NMR spectrum were obtained for an unknown structure. Draw the structure of this compound. **IR Spectrum Analysis:** The graph above displays the IR spectrum for the unknown compound. It plots transmittance against wavenumber (cm\(^{-1}\)). - **Wavenumber Range:** The x-axis covers wavenumbers from 4000 cm\(^{-1}\) to 500 cm\(^{-1}\). - **Significant Peaks:** - There is a notable peak near 3300 cm\(^{-1}\), likely indicating an O-H or N-H bond. - Peaks around 2900 cm\(^{-1}\) may suggest C-H stretching. - Strong absorptions near 1700 cm\(^{-1}\) could correspond to C=O stretching, indicating the presence of a carbonyl group. - Additional peaks between 1500 cm\(^{-1}\) to 1000 cm\(^{-1}\) might represent various C-C, C-N, or C-O stretches or bends. **Description for Educational Context:** This spectrum is used to identify functional groups in a compound. By analyzing the specific absorption peaks, we can infer the presence of different chemical bonds and use this information in conjunction with \(^{13}C\) and \(^{1}H\) NMR data to determine the molecular structure. Understanding and interpreting such spectra are fundamental skills in organic chemistry, helping to elucidate complex molecular architectures.
The image contains two Nuclear Magnetic Resonance (NMR) spectra commonly used in chemistry for structural analysis:

### Top Spectrum: ¹³C NMR Spectrum

- **X-Axis (Horizontal):** Chemical Shift (ppm)
- **Y-Axis (Vertical):** Relative Intensity

**Description:**
- The spectrum shows peaks at specific chemical shifts, indicating the presence of different carbon environments in the molecule.
- This type of spectrum is used to determine the different types of carbon atoms present within the compound.

### Bottom Spectrum: ¹H NMR Spectrum

- **X-Axis (Horizontal):** Chemical Shift (ppm)
- **Y-Axis (Vertical):** Relative Intensity

**Description:**
- The spectrum features three distinct peaks with the following integrations and labels:
  - A peak labeled "1H" at around 4.0 ppm, indicating a hydrogen environment.
  - A peak labeled "3H" at approximately 3.5 ppm.
  - A peak labeled "6H" around 1.1 ppm.
- The integration values suggest the number of hydrogen atoms contributing to each peak.

**Purpose:**
- ¹H NMR spectra provide insights into the number and types of hydrogen atoms in a molecule, assisting in elucidating the molecular structure.

These spectral analyses are essential for understanding the composition and structure of organic compounds in both research and industrial applications.
Transcribed Image Text:The image contains two Nuclear Magnetic Resonance (NMR) spectra commonly used in chemistry for structural analysis: ### Top Spectrum: ¹³C NMR Spectrum - **X-Axis (Horizontal):** Chemical Shift (ppm) - **Y-Axis (Vertical):** Relative Intensity **Description:** - The spectrum shows peaks at specific chemical shifts, indicating the presence of different carbon environments in the molecule. - This type of spectrum is used to determine the different types of carbon atoms present within the compound. ### Bottom Spectrum: ¹H NMR Spectrum - **X-Axis (Horizontal):** Chemical Shift (ppm) - **Y-Axis (Vertical):** Relative Intensity **Description:** - The spectrum features three distinct peaks with the following integrations and labels: - A peak labeled "1H" at around 4.0 ppm, indicating a hydrogen environment. - A peak labeled "3H" at approximately 3.5 ppm. - A peak labeled "6H" around 1.1 ppm. - The integration values suggest the number of hydrogen atoms contributing to each peak. **Purpose:** - ¹H NMR spectra provide insights into the number and types of hydrogen atoms in a molecule, assisting in elucidating the molecular structure. These spectral analyses are essential for understanding the composition and structure of organic compounds in both research and industrial applications.
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