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G A 2H 2H 2H TH 3H 2 ZI

G A 2H 2H 2H TH 3H 2 ZI

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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Where do the stars go the nmr
### Nuclear Magnetic Resonance (NMR) Spectrum Analysis **Introduction:** Nuclear Magnetic Resonance (NMR) spectroscopy is a powerful analytical technique used to determine the structure of organic compounds. The NMR spectrum provided here helps identify the different hydrogen (proton) environments in a molecule. **Molecular Structure:** At the top of the image, a molecular structure is presented, which includes various functional groups attached to a benzene ring. The structure indicates the positions of different hydrogen atoms that will appear in the NMR spectrum. **NMR Spectrum Details:** The NMR spectrum is plotted with chemical shift (δ) on the x-axis in parts per million (ppm) ranging from 0 to 8 ppm, and the intensity of the signal on the y-axis. The peaks in the spectrum correspond to different proton environments in the molecule. Each peak is labeled with letters (A, B, C, D, E, F, G) and the number of protons (hydrogens) it represents. **Peak Analysis:** 1. **Region 8-6 ppm:** - **Peak A:** Doublet at around 7.5 ppm, indicating 2 protons. - **Peak B:** Doublet at around 7 ppm, indicating 2 protons. 2. **Region 6-4 ppm:** - **Peak C:** Multiplet at around 4.5 ppm, indicating 2 protons. 3. **Region 4-3 ppm:** - **Peak D:** Multiplet at around 3.5 ppm, indicating 2 protons. 4. **Region 2-1 ppm:** - **Peak E:** Singlet at around 2.5 ppm, indicating 1 proton. - **Peak F:** Doublet at around 2 ppm, indicating 3 protons. 5. **Region 1-0 ppm:** - **Peak G:** Triplet at around 1 ppm, indicating 6 protons. **Conclusion:** The NMR spectrum provides valuable information about the hydrogen environments in the unknown compound. By analyzing the shifts, splitting patterns, and integration of the peaks, the structure of the molecule can be deduced in conjunction with the provided molecular structure. Understanding NMR spectra is essential for organic chemists in structural determination and verification of synthesized compounds.
Transcribed Image Text:### Nuclear Magnetic Resonance (NMR) Spectrum Analysis **Introduction:** Nuclear Magnetic Resonance (NMR) spectroscopy is a powerful analytical technique used to determine the structure of organic compounds. The NMR spectrum provided here helps identify the different hydrogen (proton) environments in a molecule. **Molecular Structure:** At the top of the image, a molecular structure is presented, which includes various functional groups attached to a benzene ring. The structure indicates the positions of different hydrogen atoms that will appear in the NMR spectrum. **NMR Spectrum Details:** The NMR spectrum is plotted with chemical shift (δ) on the x-axis in parts per million (ppm) ranging from 0 to 8 ppm, and the intensity of the signal on the y-axis. The peaks in the spectrum correspond to different proton environments in the molecule. Each peak is labeled with letters (A, B, C, D, E, F, G) and the number of protons (hydrogens) it represents. **Peak Analysis:** 1. **Region 8-6 ppm:** - **Peak A:** Doublet at around 7.5 ppm, indicating 2 protons. - **Peak B:** Doublet at around 7 ppm, indicating 2 protons. 2. **Region 6-4 ppm:** - **Peak C:** Multiplet at around 4.5 ppm, indicating 2 protons. 3. **Region 4-3 ppm:** - **Peak D:** Multiplet at around 3.5 ppm, indicating 2 protons. 4. **Region 2-1 ppm:** - **Peak E:** Singlet at around 2.5 ppm, indicating 1 proton. - **Peak F:** Doublet at around 2 ppm, indicating 3 protons. 5. **Region 1-0 ppm:** - **Peak G:** Triplet at around 1 ppm, indicating 6 protons. **Conclusion:** The NMR spectrum provides valuable information about the hydrogen environments in the unknown compound. By analyzing the shifts, splitting patterns, and integration of the peaks, the structure of the molecule can be deduced in conjunction with the provided molecular structure. Understanding NMR spectra is essential for organic chemists in structural determination and verification of synthesized compounds.
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