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A DEPT NMR spectrum is shown for a molecule with the molecular formula of C5H10O. Draw the structure that best fits this data. 200 180 160 dystryb 100 80 60 140 120 40 20 T ppm 0

A DEPT NMR spectrum is shown for a molecule with the molecular formula of C5H10O. Draw the structure that best fits this data. 200 180 160 dystryb 100 80 60 140 120 40 20 T ppm 0

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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### Title: Analyzing DEPT NMR Spectrum for a Molecule with Molecular Formula C₅H₁₀O #### Description: The image presents a DEPT (Distortionless Enhancement by Polarization Transfer) NMR spectrum for a molecule with the molecular formula C₅H₁₀O. The task is to draw the structure that best fits this data. #### Graph Explanation: - **X-Axis (ppm):** This axis represents the chemical shift in parts per million (ppm). It is the standard unit for NMR spectroscopy, indicating the environment of the carbon atoms in the molecule. - **Peaks:** There are four significant peaks in the spectrum. The positions of these peaks provide insights into the types of carbon atoms present: - One peak near 20 ppm - One peak near 40 ppm - One peak near 80 ppm - One peak near 140 ppm These peaks suggest the presence of different carbon environments, which could indicate various functional groups or structural features in the molecule. #### Task: Using the information from the DEPT NMR spectrum, deduce and draw the most likely structure for the molecule C₅H₁₀O. Consider how the chemical shifts correlate with possible functional groups and carbon types. #### Notes: - DEPT NMR spectroscopy helps differentiate between CH, CH₂, and CH₃ groups based on peak intensities and patterns. - It's crucial to consider the splitting and coupling patterns to make informed decisions about the molecular structure. This analysis is aimed at providing students and educators with an understanding of how to interpret a DEPT NMR spectrum and apply it to molecular structure determination.
Transcribed Image Text:### Title: Analyzing DEPT NMR Spectrum for a Molecule with Molecular Formula C₅H₁₀O #### Description: The image presents a DEPT (Distortionless Enhancement by Polarization Transfer) NMR spectrum for a molecule with the molecular formula C₅H₁₀O. The task is to draw the structure that best fits this data. #### Graph Explanation: - **X-Axis (ppm):** This axis represents the chemical shift in parts per million (ppm). It is the standard unit for NMR spectroscopy, indicating the environment of the carbon atoms in the molecule. - **Peaks:** There are four significant peaks in the spectrum. The positions of these peaks provide insights into the types of carbon atoms present: - One peak near 20 ppm - One peak near 40 ppm - One peak near 80 ppm - One peak near 140 ppm These peaks suggest the presence of different carbon environments, which could indicate various functional groups or structural features in the molecule. #### Task: Using the information from the DEPT NMR spectrum, deduce and draw the most likely structure for the molecule C₅H₁₀O. Consider how the chemical shifts correlate with possible functional groups and carbon types. #### Notes: - DEPT NMR spectroscopy helps differentiate between CH, CH₂, and CH₃ groups based on peak intensities and patterns. - It's crucial to consider the splitting and coupling patterns to make informed decisions about the molecular structure. This analysis is aimed at providing students and educators with an understanding of how to interpret a DEPT NMR spectrum and apply it to molecular structure determination.
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