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At room temperature, N,N-dimethylformamide, HCON(CH3)2, has three "H NMR signals, appearing at 2.9, 3.0, and 8.0 ppm. As the temperature is increased, the two signals at 2.9 and 3.0 ppm merge into one signal. Explain. Hint: Consider the resonance structures of the compound.

At room temperature, N,N-dimethylformamide, HCON(CH3)2, has three "H NMR signals, appearing at 2.9, 3.0, and 8.0 ppm. As the temperature is increased, the two signals at 2.9 and 3.0 ppm merge into one signal. Explain. Hint: Consider the resonance structures of the compound.

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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At room temperature, N,N-dimethylformamide, HCON(CH3)2, has three "H NMR signals, appearing at 2.9, 3.0, and 8.0 ppm. As the temperature is increased, the two signals at 2.9 and 3.0 ppm merge into one signal. Explain. Hint: Consider the resonance structures of the compound.
Transcribed Image Text:At room temperature, N,N-dimethylformamide, HCON(CH3)2, has three "H NMR signals, appearing at 2.9, 3.0, and 8.0 ppm. As the temperature is increased, the two signals at 2.9 and 3.0 ppm merge into one signal. Explain. Hint: Consider the resonance structures of the compound.
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