Like hydrogen, fluorine-19 (abundance 100%) has a nuclear spin quantum number, I = 1/2. Therefore, 19F spin couples with 1H nuclei and split 1H NMR signals by following n + 1 rule in a fluorine containing compound. However, the 1H-19F coupling constants are much larger than the 1H-1H coupling constants. For example, 2JH-F is about 45-50 Hz whereas 3JH-F is about 20-22 Hz. A compound with the formula C2H4BrF has the following NMR spectrum. Draw the structure for this compound.Using the Hertz values on the expansions, calculate the coupling constants and completely explain the spectrum by drawing splitting diagrams for each equivalent hydrogen. **NMR Spectroscopy Overview**This image presents three NMR (Nuclear Magnetic Resonance) spectra collected at 300 MHz. NMR spectroscopy is a powerful analytical technique used to determine the structure of organic compounds.**Description of Spectra:**1. **Top Spectrum:** - The spectrum ranges from 10 to 0 ppm (parts per million). - Notable peaks are observed at: - 7.85, 7.73, 7.61, 7.50 ppm (might correspond to aromatic protons). - Other minor peaks appear at 1.38, 1.31, 1.25, and 1.20 ppm, possibly indicating aliphatic protons.2. **Bottom Left Spectrum:** - This spectrum focuses on the region between 4.80 and 4.35 ppm. - A set of splitting patterns likely indicative of proton coupling can be seen. - Such patterns may suggest the presence of an electronegative atom or functional group nearby (e.g., -OH, -NH).3. **Bottom Right Spectrum:** - The zoomed-in view spans 3.62 to 3.48 ppm. - Several peaks are clustered, suggesting multiple protons in similar environments, possibly near a functional group like -CH2- or -OCH3.**Understanding Spectra:**- **Chemical Shift (ppm):** Indicates the electronic environment of the protons. The position relates to electronegativity and shielding effects.- **Multiplet Patterns:** Result from spin-spin coupling between neighboring protons, revealing insights into the molecular structure.These spectra combined can help deduce the compound’s structure by evaluating the number of unique proton environments and their couplings.

Given Organic compound: C2H4BrF i)To draw the structure of the compound. ii) To calculate the…

Answered: A compound with the formula C2H4BrF has…

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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Like hydrogen, fluorine-19 (abundance 100%) has a nuclear spin quantum number, I = 1/2. Therefore, ¹⁹F spin couples with ¹H nuclei and split ¹H NMR signals by following n + 1 rule in a fluorine containing compound. However, the ¹H-¹⁹F coupling constants are much larger than the ¹H-¹H coupling constants. For example,²J_H-F is about 45-50 Hz whereas ³J_H-F is about 20-22 Hz.

A compound with the formula C₂H₄BrF has the following NMR spectrum. Draw the structure for this compound.

Using the Hertz values on the expansions, calculate the coupling constants and completely explain the spectrum by drawing splitting diagrams for each equivalent hydrogen.

**NMR Spectroscopy Overview**

This image presents three NMR (Nuclear Magnetic Resonance) spectra collected at 300 MHz. NMR spectroscopy is a powerful analytical technique used to determine the structure of organic compounds.

**Description of Spectra:**

1. **Top Spectrum:**
- The spectrum ranges from 10 to 0 ppm (parts per million).
- Notable peaks are observed at:
- 7.85, 7.73, 7.61, 7.50 ppm (might correspond to aromatic protons).
- Other minor peaks appear at 1.38, 1.31, 1.25, and 1.20 ppm, possibly indicating aliphatic protons.

2. **Bottom Left Spectrum:**
- This spectrum focuses on the region between 4.80 and 4.35 ppm.
- A set of splitting patterns likely indicative of proton coupling can be seen.
- Such patterns may suggest the presence of an electronegative atom or functional group nearby (e.g., -OH, -NH).

3. **Bottom Right Spectrum:**
- The zoomed-in view spans 3.62 to 3.48 ppm.
- Several peaks are clustered, suggesting multiple protons in similar environments, possibly near a functional group like -CH2- or -OCH3.

**Understanding Spectra:**
- **Chemical Shift (ppm):** Indicates the electronic environment of the protons. The position relates to electronegativity and shielding effects.
- **Multiplet Patterns:** Result from spin-spin coupling between neighboring protons, revealing insights into the molecular structure.

These spectra combined can help deduce the compound’s structure by evaluating the number of unique proton environments and their couplings.

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