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C H 1 13C ل 200 5 مسلم 150 3 2 5 3 لسلسل ن ه

C H 1 13C ل 200 5 مسلم 150 3 2 5 3 لسلسل ن ه

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
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Give structures for the following compounds based on the spectra given. Explain your logic.
**NMR Spectroscopy Analysis for C₁₃H₁₈O₃** This image presents NMR (Nuclear Magnetic Resonance) spectroscopy data for the compound with the molecular formula C₁₃H₁₈O₃. The image consists of two spectra: a Proton (^1H) NMR spectrum and a Carbon (^13C) NMR spectrum. ### ^1H NMR Spectrum: - **Range**: The chemical shift range is approximately from 0 to 12 ppm (parts per million). - **Peaks**: - There are notable peaks at approximately 0.9, 1.2, 1.5, 2.5, 3.8, and 7.3 ppm. - Peaks are labeled from 1 to 6, with each label corresponding to specific hydrogen environments within the molecule. - The peak at 7.3 ppm is labeled 5, indicating an aromatic environment, possibly due to a phenyl group or a similar structure. - Peaks at lower ppm values, such as around 0.9 and 1.2, suggest the presence of aliphatic hydrogen atoms. ### ^13C NMR Spectrum: - **Range**: The chemical shift range is approximately from 0 to 220 ppm. - **Peaks**: - Several distinct peaks are observed, with significant ones appearing around 20, 60, 125, 130, 150, and 200 ppm. - These peaks represent different carbon environments in the molecule, with higher ppm values (e.g., 150 and above) typically indicating carbon atoms attached to electronegative elements or involved in double bonds. ### Interpretation: The ^1H NMR spectrum provides insights into the different types of hydrogen present, showing multiplicity and chemical shift indicative of the chemical environment. The ^13C NMR spectrum provides information about the carbon skeleton, helping to determine the structural framework of the compound. Together, these spectra allow for the detailed structural analysis of C₁₃H₁₈O₃, enabling the identification of functional groups, aromatic rings, and aliphatic chains.
Transcribed Image Text:**NMR Spectroscopy Analysis for C₁₃H₁₈O₃** This image presents NMR (Nuclear Magnetic Resonance) spectroscopy data for the compound with the molecular formula C₁₃H₁₈O₃. The image consists of two spectra: a Proton (^1H) NMR spectrum and a Carbon (^13C) NMR spectrum. ### ^1H NMR Spectrum: - **Range**: The chemical shift range is approximately from 0 to 12 ppm (parts per million). - **Peaks**: - There are notable peaks at approximately 0.9, 1.2, 1.5, 2.5, 3.8, and 7.3 ppm. - Peaks are labeled from 1 to 6, with each label corresponding to specific hydrogen environments within the molecule. - The peak at 7.3 ppm is labeled 5, indicating an aromatic environment, possibly due to a phenyl group or a similar structure. - Peaks at lower ppm values, such as around 0.9 and 1.2, suggest the presence of aliphatic hydrogen atoms. ### ^13C NMR Spectrum: - **Range**: The chemical shift range is approximately from 0 to 220 ppm. - **Peaks**: - Several distinct peaks are observed, with significant ones appearing around 20, 60, 125, 130, 150, and 200 ppm. - These peaks represent different carbon environments in the molecule, with higher ppm values (e.g., 150 and above) typically indicating carbon atoms attached to electronegative elements or involved in double bonds. ### Interpretation: The ^1H NMR spectrum provides insights into the different types of hydrogen present, showing multiplicity and chemical shift indicative of the chemical environment. The ^13C NMR spectrum provides information about the carbon skeleton, helping to determine the structural framework of the compound. Together, these spectra allow for the detailed structural analysis of C₁₃H₁₈O₃, enabling the identification of functional groups, aromatic rings, and aliphatic chains.
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