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In the following examples, we will learn how to solve NMR practice problems step-by-step in over 100 min video solutions which is essential for organic structure determination.
The following exercises are designed to help you become familiar with predicting the 1H NMR spectra of simple organic molecules. For each example you should find the number of signals you expect, where they should show on the scale (chemical shift), and what shape they should be (splitting patterns).
Online NMR Practice Problems and Resources. Some good resources to practice NMR problems and combined spectral problems (ones that have proton, carbon, and sometimes IR and MS data) are listed below. The first site has tons of practice problems at all levels, from beginning to advanced.
Spectroscopy Problems. In each of these problems you are given the IR, NMR, and molecular formula. Using this information, your task is to determine the structure of the compound. The best approach for spectroscopy problems is the following steps: Calculate the degree of unsaturation to limit the number of possible structures.
The advanced spectral analysis problems focusing on analyzing 1- and 2D NMR spectra to address questions of stereochemistry. The advanced structure determination problems focus on using all of these techniques to determine the structures of organic compounds.
TASK 10 – Using 1H and 13C NMR together to identify compounds. The 1H and 13C NMR spectra of C5H9OCl are shown. Deduce the structure of the compound and then explain each signal. The 1H and 13C NMR spectra of C5H10O2 are shown.
W has an empirical formula of C10H13NO2. Given are the following spectra. Determine the degree of unsaturation for the compound. Assign five pertinent peaks in the IR spectrum. Suggest a structure for compound W based on the spectra given.
