Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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1) circle the bands of interest draw corresponding bonds next to bands

2) draw possible structure. 

### Infrared Spectroscopy Analysis of C₉H₁₆

**Transmittance Spectrum**

This graph represents the infrared (IR) spectrum of a compound with the formula C₉H₁₆. The spectrum is plotted with *Transmittance* (%) on the y-axis, ranging from 0% to 100%, and *Wavenumber* (cm⁻¹) on the x-axis, ranging from 4000 cm⁻¹ to 500 cm⁻¹.

#### Key Features of the Spectrum:

1. **Broad Peak around 3000 cm⁻¹:**
   - This region typically indicates the presence of C-H stretching vibrations, which are common in hydrocarbons.

2. **Distinct Peaks:**
   - Several sharp peaks are observed in the fingerprint region (1500 cm⁻¹ to 500 cm⁻¹), which provides unique information about the molecular structure and can be used to identify specific functional groups or bonds.

3. **High Transmittance:**
   - Outside these absorption bands, the transmittance is close to 100%, indicating regions where the compound does not absorb IR radiation.

#### Interpretation:

The IR spectrum is crucial for identifying functional groups within the compound. By analyzing the specific wavenumbers where absorptions occur, researchers can determine the types of chemical bonds and functional groups present in C₉H₁₆. This information is fundamental in organic chemistry for structural determination and verification of synthesized compounds.
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Transcribed Image Text:### Infrared Spectroscopy Analysis of C₉H₁₆ **Transmittance Spectrum** This graph represents the infrared (IR) spectrum of a compound with the formula C₉H₁₆. The spectrum is plotted with *Transmittance* (%) on the y-axis, ranging from 0% to 100%, and *Wavenumber* (cm⁻¹) on the x-axis, ranging from 4000 cm⁻¹ to 500 cm⁻¹. #### Key Features of the Spectrum: 1. **Broad Peak around 3000 cm⁻¹:** - This region typically indicates the presence of C-H stretching vibrations, which are common in hydrocarbons. 2. **Distinct Peaks:** - Several sharp peaks are observed in the fingerprint region (1500 cm⁻¹ to 500 cm⁻¹), which provides unique information about the molecular structure and can be used to identify specific functional groups or bonds. 3. **High Transmittance:** - Outside these absorption bands, the transmittance is close to 100%, indicating regions where the compound does not absorb IR radiation. #### Interpretation: The IR spectrum is crucial for identifying functional groups within the compound. By analyzing the specific wavenumbers where absorptions occur, researchers can determine the types of chemical bonds and functional groups present in C₉H₁₆. This information is fundamental in organic chemistry for structural determination and verification of synthesized compounds.
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