Is this NMR for acetophenone or 2-methylbenzaldehyde? 8.10 8.05 8.00 7.95 7.90 7.857.80 7.75 7.70f1: ¹H (ppm)7.65 7.60 7.55 7.50 7.45 7.40 7.352.70 2.65 2.60 2.5524.9-38.3-37.1-r7.9737.967-7.964-7.962-7.9607.958-7.9577.946-7.939¹7.9347.584-7.580-7.5757.563-7.5567.5557.5547.5487.5357.5317.5267.4827.4787.4767.4747.471-7.455-7.448-7.445-7.444-7.4327.426¹7.4232.595

2-methyl bezaldehyde should have -CHO peak at 9.5 -10 ppmBut there is no such peak.

Answered: Is this NMR for acetophenone or…

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Chemistry

Is this NMR for acetophenone or 2-methylbenzaldehyde?

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter13: The Chemistry Of Solutes And Solutions

Section: Chapter Questions

Problem 83QRT

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Concept explainers

Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.

Question

Is this NMR for acetophenone or 2-methylbenzaldehyde?

8.10 8.05 8.00 7.95 7.90 7.85
7.80 7.75 7.70
f1: ¹H (ppm)
7.65 7.60 7.55 7.50 7.45 7.40 7.35
2.70 2.65 2.60 2.55
24.9-
38.3-
37.1-
r7.973
7.967
-7.964
-7.962
-7.960
7.958
-7.957
7.946
-7.939
¹7.934
7.584
-7.580
-7.575
7.563
-7.556
7.555
7.554
7.548
7.535
7.531
7.526
7.482
7.478
7.476
7.474
7.471
-7.455
-7.448
-7.445
-7.444
-7.432
7.426
¹7.423
2.595

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