The compound [14]-annulene shows only two 'H NMR signals - one at ~0 ppm and the other ~7.6 ppm. Using benzene as a model for diamagnetic anisotropy, which of the following is expected to be true for the H signals of {14}-annulene as shown to the right? [Note: coding here is Red = outer H's, Blue = inner H's] H. H. HH H. a. The blue are 7.6 ppm and the blue are 0 ppm b. The red are 7.6 ppm and the red are 0 ppm c. Some of the red and some of the blue give rise to each signal d. The inner protons of all annulenes form an H-bonding complex called the diagmagnetic quatro-orbitrap that always shows a signal at -8 ppm. e. More information is needed
The compound [14]-annulene shows only two 'H NMR signals - one at ~0 ppm and the other ~7.6 ppm. Using benzene as a model for diamagnetic anisotropy, which of the following is expected to be true for the H signals of {14}-annulene as shown to the right? [Note: coding here is Red = outer H's, Blue = inner H's] H. H. HH H. a. The blue are 7.6 ppm and the blue are 0 ppm b. The red are 7.6 ppm and the red are 0 ppm c. Some of the red and some of the blue give rise to each signal d. The inner protons of all annulenes form an H-bonding complex called the diagmagnetic quatro-orbitrap that always shows a signal at -8 ppm. e. More information is needed
Macroscale and Microscale Organic Experiments
7th Edition
ISBN:9781305577190
Author:Kenneth L. Williamson, Katherine M. Masters
Publisher:Kenneth L. Williamson, Katherine M. Masters
Chapter30: Alkylation Of Mesitylene
Section: Chapter Questions
Problem 2Q
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