d. How would the sign of the proton hyperfine coupling constant indicate whether the odd electron was in a sigma- or pi-molecular orbital? e. Using the value of aµ given above and the fact that the unpaired electron is in the A-system, calculate the spin density on the nearest neighbor carbon.

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Chapter1: Chemical Foundations
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subsection d and e

 

H H
5. The mono negative ion
can be prepared.
H
H
a. How many lines are expected in the spectrum, and what would be the relative
intensities of these?
b. What evidence would you employ and what experiments could be carried out to
indicate electron delocalization onto the oxygen?
c. The magnitude of a in this material is 2.37 gauss. Compare the spin density on
hydrogen in this molecule with that on a hydrogen atom.
d. How would the sign of the proton hyperfine coupling constant indicate whether
the odd electron was in a sigma- or pi-molecular orbital?
e. Using the value of a# given above and the fact that the unpaired electron is in the
n-system, calculate the spin density on the nearest neighbor carbon.
Transcribed Image Text:H H 5. The mono negative ion can be prepared. H H a. How many lines are expected in the spectrum, and what would be the relative intensities of these? b. What evidence would you employ and what experiments could be carried out to indicate electron delocalization onto the oxygen? c. The magnitude of a in this material is 2.37 gauss. Compare the spin density on hydrogen in this molecule with that on a hydrogen atom. d. How would the sign of the proton hyperfine coupling constant indicate whether the odd electron was in a sigma- or pi-molecular orbital? e. Using the value of a# given above and the fact that the unpaired electron is in the n-system, calculate the spin density on the nearest neighbor carbon.
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