Discuss this ¹H nmr spectrum from the point of view of the number of eaks and the relative intensities of the signals in the multiplet. Try and out the relative intensities you would expect for CD₂H2 by drawing a com ree and realizing that all 2JHD couplings are identical.

Principles of Instrumental Analysis
7th Edition
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Chapter19: Nuclear Magnetic Resonance Spectroscopy
Section: Chapter Questions
Problem 19.18QAP
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There are not very many molecules in which one can observe coupling of a
spin ½ nucleus to two equivalent 1 > ½ nuclei, but an isotopomer of CH4,
namely CD₂H2, is one of them, as D has an I value of 1. The ¹H nmr spectrum
is shown below for CD₂H2.
Discuss this ¹H nmr spectrum from the point of view of the number of
peaks and the relative intensities of the signals in the multiplet. Try and work
out the relative intensities you would expect for CD₂H₂ by drawing a coupling
tree and realizing that all 2JHD couplings are identical.
Transcribed Image Text:There are not very many molecules in which one can observe coupling of a spin ½ nucleus to two equivalent 1 > ½ nuclei, but an isotopomer of CH4, namely CD₂H2, is one of them, as D has an I value of 1. The ¹H nmr spectrum is shown below for CD₂H2. Discuss this ¹H nmr spectrum from the point of view of the number of peaks and the relative intensities of the signals in the multiplet. Try and work out the relative intensities you would expect for CD₂H₂ by drawing a coupling tree and realizing that all 2JHD couplings are identical.
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