ORGANIC CHEMISTRY-ETEXT REG ACCESS
ORGANIC CHEMISTRY-ETEXT REG ACCESS
12th Edition
ISBN: 9781119308362
Author: Solomons
Publisher: WILEY
Question
Book Icon
Chapter 24, Problem 24P
Interpretation Introduction

Interpretation:

The consistency of observations, 1H NMR spectrum of N,N-dimethylformamide, at room temperature and higher temperatures, is to be explained on the basis of the existence of a relatively large barrier to rotation about the carbon–nitrogen bond of DMF.

Concept introduction:

It is a well-known phenomenon that the variation in the 1H NMR chemical shifts with varying temperatures. At higher temperatures, the thermal fluctuations result in higher mobility of the atoms, subsequently decreasing the chemical-shift values of amide protons.

Blurred answer
Students have asked these similar questions
Which best describes a characteristic of the NMR spectra for amines? O secondary amine have N-H signals around бH 6.0 O protons on the a carbon are more deshielded than protons on the ẞ carbon O C13 signals for the a carbon of an aliphatic amine appear around ō 20 O protons on the ẞ carbon absorb around б 1.3
the quation is in the photo
Consider carbons x, y, and z in p-methylanisole. One has a chemical shift of δ 20, another has δ 55, and the third δ 157. Match the chemical shifts with the appropriate carbons.
Knowledge Booster
Background pattern image
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Organic Chemistry
Chemistry
ISBN:9781305080485
Author:John E. McMurry
Publisher:Cengage Learning
Text book image
Organic Chemistry
Chemistry
ISBN:9781305580350
Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Publisher:Cengage Learning
Text book image
Macroscale and Microscale Organic Experiments
Chemistry
ISBN:9781305577190
Author:Kenneth L. Williamson, Katherine M. Masters
Publisher:Brooks Cole
Text book image
EBK A SMALL SCALE APPROACH TO ORGANIC L
Chemistry
ISBN:9781305446021
Author:Lampman
Publisher:CENGAGE LEARNING - CONSIGNMENT