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

Organic Chemistry: A Guided Inquiry
2nd Edition
ISBN:9780618974122
Author:Andrei Straumanis
Publisher:Andrei Straumanis
ChapterL4: Proton (1h) Nmr Spectroscopy
Section: Chapter Questions
Problem 3E: Here are proton NMR data for 1-bromopropane: Ha : triplet (2H) 3.32ppm; Hb : multiplet (2H)1.81ppm;...
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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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