2- The chemical shift value of o-nitro toluene is higher than that of m-nitro toluene.

Organic Chemistry
9th Edition
ISBN:9781305080485
Author:John E. McMurry
Publisher:John E. McMurry
Chapter13: Structure Determination: Nuclear Magnetic Resonance Spectroscopy
Section13.8: More Complex Spin–spin Splitting Patterns
Problem 15P: 3-Bromo-1-phenyl-1-propene shows a complex NMR spectrum in which the vinylic proton at C2 is coupled...
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Q/Reasons for the following:
TL
2- The chemical shift value of o-nitro toluene is higher than that of m-nitro
toluene.
3-The value of the ortho-coupling constant is higher than the para-coupling
constant for aromatic ring protons.
4- When the temperature is lowered below zero when measuring the nuclear
magnetic resonance spectrum of the proton, the proton of the hydroxyl group
pairs with the methylene group of the ethanol compound.
Transcribed Image Text:Q/Reasons for the following: TL 2- The chemical shift value of o-nitro toluene is higher than that of m-nitro toluene. 3-The value of the ortho-coupling constant is higher than the para-coupling constant for aromatic ring protons. 4- When the temperature is lowered below zero when measuring the nuclear magnetic resonance spectrum of the proton, the proton of the hydroxyl group pairs with the methylene group of the ethanol compound.
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