triphenylmethyl radical hexaphenylethane

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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The triphenylmethyl radical is an unusual persistent radical present in solution in equilibrium with its dimer. For 70 years the dimer was thought to be hexaphenylethane, but in 1970, NMR data showed it to be A.

a.Why is the triphenylmethyl radical more stable than most other radicals?

b.Use curved arrow notation to show how two triphenylmethyl radicals dimerize to form A.

c.Propose a reason for the formation of A rather than hexaphenylethane.

d.How could 1H and 13C NMR spectroscopy be used to distinguish between hexaphenylethane and A? 

triphenylmethyl radical
hexaphenylethane
Transcribed Image Text:triphenylmethyl radical hexaphenylethane
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