The Newman of 2,2,3-trimethylpentane is shown in the box. Predict the number of signals in 1°C NMR. – Please remember that NMR cannot distinguish between conformers. H H. „CH3 H3C `C(CH3)3 H 2,2,3-trimethylpentane A) three signals B) four signals

The Newman of 2,2,3-trimethylpentane is shown in the box. Predict the number of signals in 1°C NMR. – Please remember that NMR cannot distinguish between conformers. H H. „CH3 H3C `C(CH3)3 H 2,2,3-trimethylpentane A) three signals B) four signals

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter13: Nuclear Magnetic Resonance Spectroscopy

Section: Chapter Questions

Problem 13.27P: The 13C-NMR spectrum of 3-methyl-2-butanol shows signals at 17.88 (CH3), 18.16 (CH3), 20.01 (CH3),...

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Concept explainers

NMR Spectroscopy

NMR stands for Nuclear Magnetic Resonance in which the study of different molecules is done based on the interaction of radiofrequency electromagnetic radiations with the nuclei of molecules placed in a strong magnetic field. A precise study of spectra of visible light and all bands of electromagnetic radiation is called spectroscopy.

Question

Can you please explain the steps

14. The Newman of 2,2,3-trimethylpentane is
shown in the box. Predict the number of
signals in 1°C NMR. – Please remember
that NMR cannot distinguish between
conformers.
-
H.
CH3
H3C
`C(CH3)3
H
2,2,3-trimethylpentane
A) three signals
B) four signals
C) six signals
D) seven signals

Expert Solution

Step 1

Number of signals in ¹³C NMR :-

Chemically equivalent carbon will give same signal and chemically non-equivalent carbon will give different signals.

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