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4000 3500 3000 2500 Wavenumbers (cm-1) 2000 1500 1000 500 -5 0 5 1667.95 10 1119.19 744.48 1624.33 686.50 969.92 % Transmittance 1605.34 1575.06 619.86 605.24 581.72 1449.38 1071.87 1293.68 1392.78 1005.59 2812.2 2741.22 1731.13 1494.99 3027.88 1250.61 1177.93 1159.68 1327.14 841.15 100 ali cinnamon

4000 3500 3000 2500 Wavenumbers (cm-1) 2000 1500 1000 500 -5 0 5 1667.95 10 1119.19 744.48 1624.33 686.50 969.92 % Transmittance 1605.34 1575.06 619.86 605.24 581.72 1449.38 1071.87 1293.68 1392.78 1005.59 2812.2 2741.22 1731.13 1494.99 3027.88 1250.61 1177.93 1159.68 1327.14 841.15 100 ali cinnamon

Chemistry
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
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This is the IR spectrum of *cinnamon oil* - Please identify the key peaks in the IR spectrum and the bond type. -If possible, identify around 5-6 peaks.
The image is an infrared (IR) spectroscopy graph representing the IR spectrum of a substance labeled "Jali cinnamon." **Graph Details:** - **Axes:** - The x-axis represents wavenumbers (cm⁻¹) ranging from 4000 to 500 cm⁻¹. - The y-axis shows % Transmittance, ranging from -5 to 100%. **Key Spectral Features:** 1. **Broad Peaks:** - There is a broad absorption band around 3027.88 cm⁻¹, which may correspond to C-H stretching vibrations typically seen in organic compounds. 2. **Sharp Peaks:** - A series of sharp peaks occur at: - 2812.20 cm⁻¹ and 2741.22 cm⁻¹: These may also relate to C-H stretching. - 1731.13 cm⁻¹: This is often associated with C=O stretching in carbonyl groups. - 1679.95 cm⁻¹, 1624.33 cm⁻¹, and 1605.34 cm⁻¹: Possible C=C stretching vibrations. - 1449.38 cm⁻¹, 1392.78 cm⁻¹, 1299.68 cm⁻¹: Indicate possible bending vibrations of C-H bonds or other functional groups. - 1250.61 cm⁻¹, 1159.68 cm⁻¹, 1119.19 cm⁻¹: Commonly associated with C-O stretching in ethers or esters, and other functional group vibrations. - 1071.87 cm⁻¹ to 581.72 cm⁻¹: These correspond to various bending and stretching modes, often indicating the fingerprint region of organic molecules. These spectral data points are crucial for identifying the specific chemical groups present in the Jali cinnamon sample based on known IR absorption frequencies.
Transcribed Image Text:The image is an infrared (IR) spectroscopy graph representing the IR spectrum of a substance labeled "Jali cinnamon." **Graph Details:** - **Axes:** - The x-axis represents wavenumbers (cm⁻¹) ranging from 4000 to 500 cm⁻¹. - The y-axis shows % Transmittance, ranging from -5 to 100%. **Key Spectral Features:** 1. **Broad Peaks:** - There is a broad absorption band around 3027.88 cm⁻¹, which may correspond to C-H stretching vibrations typically seen in organic compounds. 2. **Sharp Peaks:** - A series of sharp peaks occur at: - 2812.20 cm⁻¹ and 2741.22 cm⁻¹: These may also relate to C-H stretching. - 1731.13 cm⁻¹: This is often associated with C=O stretching in carbonyl groups. - 1679.95 cm⁻¹, 1624.33 cm⁻¹, and 1605.34 cm⁻¹: Possible C=C stretching vibrations. - 1449.38 cm⁻¹, 1392.78 cm⁻¹, 1299.68 cm⁻¹: Indicate possible bending vibrations of C-H bonds or other functional groups. - 1250.61 cm⁻¹, 1159.68 cm⁻¹, 1119.19 cm⁻¹: Commonly associated with C-O stretching in ethers or esters, and other functional group vibrations. - 1071.87 cm⁻¹ to 581.72 cm⁻¹: These correspond to various bending and stretching modes, often indicating the fingerprint region of organic molecules. These spectral data points are crucial for identifying the specific chemical groups present in the Jali cinnamon sample based on known IR absorption frequencies.
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