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6. For each of the following molecules: i) Fill in all the C-H bonds; ii) Then identify FOUR unlque stretching frequencies that will appear in the IR spectrum in the region 1600-4000 cm' ; and predfet the position (cm-1), shape and intensity of each band. a) C=C-C-H b) CミC-C-c-c c) c-c-c-と-CEN

6. For each of the following molecules: i) Fill in all the C-H bonds; ii) Then identify FOUR unlque stretching frequencies that will appear in the IR spectrum in the region 1600-4000 cm' ; and predfet the position (cm-1), shape and intensity of each band. a) C=C-C-H b) CミC-C-c-c c) c-c-c-と-CEN

Chemistry
Chemistry
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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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For each of the following molecules: i) Fill in all the C-H bonds. ii) Then identify FOUR unique stretching frequencies that will appear in the IR spectrum in the region 1600-4000 cm<sup>-1</sup>, and predict the position (cm<sup>-1</sup>), shape, and intensity of each band. a) \( \text{C} \equiv \text{C} - \text{C} - \text{H} \) b) \( \text{C} \equiv \text{C} - \text{C} - \overset{\text{O}}{\underset{||}{\text{C}}} - \text{C} \) c) \( \text{C} - \overset{\text{O}}{\underset{||}{\text{C}}} - \overset{\text{O}}{\underset{||}{\text{C}}} - \overset{\text{O}}{\underset{||}{\text{C}}} - \text{C} \equiv \text{N} \) **Explanation:** The task involves examining these molecules to detect specific C-H bonds and to identify infrared (IR) stretching frequencies. In the infrared region, each type of bond vibration is expected to result in a unique spectral band. These bands can be characterized by their position in cm<sup>-1</sup> on the spectrum, along with the shape and intensity that relate to the molecular vibration modes.
Transcribed Image Text:For each of the following molecules: i) Fill in all the C-H bonds. ii) Then identify FOUR unique stretching frequencies that will appear in the IR spectrum in the region 1600-4000 cm<sup>-1</sup>, and predict the position (cm<sup>-1</sup>), shape, and intensity of each band. a) \( \text{C} \equiv \text{C} - \text{C} - \text{H} \) b) \( \text{C} \equiv \text{C} - \text{C} - \overset{\text{O}}{\underset{||}{\text{C}}} - \text{C} \) c) \( \text{C} - \overset{\text{O}}{\underset{||}{\text{C}}} - \overset{\text{O}}{\underset{||}{\text{C}}} - \overset{\text{O}}{\underset{||}{\text{C}}} - \text{C} \equiv \text{N} \) **Explanation:** The task involves examining these molecules to detect specific C-H bonds and to identify infrared (IR) stretching frequencies. In the infrared region, each type of bond vibration is expected to result in a unique spectral band. These bands can be characterized by their position in cm<sup>-1</sup> on the spectrum, along with the shape and intensity that relate to the molecular vibration modes.
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