Imagine: H is at 6.8ppm and it's spin is down while H is at 6.3ppm. When we get to 6.8ppm H jumps from spin down to spin up. But H also has spin either down or up and spin interacts with Magnetic fields so it must influence the magnetic field felt by H. So, the spin of H adds (or subtracts) from the field felt by H. The line for H won't be exactly at 6.8ppm but either a bit higher or a bit lower due to the spin of H. That is the case for one molecule or for a million of these molecules in your NMR tube. What happens as we approach H?

Imagine: H is at 6.8ppm and it's spin is down while H is at 6.3ppm. When we get to 6.8ppm H jumps from spin down to spin up. But H also has spin either down or up and spin interacts with Magnetic fields so it must influence the magnetic field felt by H. So, the spin of H adds (or subtracts) from the field felt by H. The line for H won't be exactly at 6.8ppm but either a bit higher or a bit lower due to the spin of H. That is the case for one molecule or for a million of these molecules in your NMR tube. What happens as we approach H?

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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