a. The set of peaks centering on about 1.9 ppm is expanded in both the x and y directions in order to show the pattern more clearly. This expanded pat- tern is shown as an inset on the full spectrum. C,H1402 2.00 1.95 1.90 1.85 2.00 1.95 1.08 2.96 6.01 4.0 3.5 3.0 2.5 2.0 1.5 1.0 b. c. C,H,402 C,H402 2.00 8,58 2.83 2.08 2.02 2.13 2.14 2.94 3.00 2.6 2.5 2.4 2.3 2.2 2.1 2.0 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 0.9 4.0 3.5 3.0 2.5 2.0 1.5 1.0

Organic Chemistry: A Guided Inquiry
2nd Edition
ISBN:9780618974122
Author:Andrei Straumanis
Publisher:Andrei Straumanis
ChapterL3: Carbon (13c) Nmr Spectroscopy
Section: Chapter Questions
Problem 5E
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Following are the NMR spectra of three isomeric esters with the formula C7H14O2, all derived from propanoic acid. Provide a structure for each.

a. The set of peaks centering on about 1.9 ppm is expanded in both the x and
y directions in order to show the pattern more clearly. This expanded pat-
tern is shown as an inset on the full spectrum.
C,H1402
2.00
1.95
1.90
1.85
2.00
1.95
1.08
2.96
6.01
4.0
3.5
3.0
2.5
2.0
1.5
1.0
Transcribed Image Text:a. The set of peaks centering on about 1.9 ppm is expanded in both the x and y directions in order to show the pattern more clearly. This expanded pat- tern is shown as an inset on the full spectrum. C,H1402 2.00 1.95 1.90 1.85 2.00 1.95 1.08 2.96 6.01 4.0 3.5 3.0 2.5 2.0 1.5 1.0
b.
c.
C,H,402
C,H402
2.00
8,58
2.83
2.08
2.02
2.13
2.14
2.94 3.00
2.6
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
4.0
3.5
3.0
2.5
2.0
1.5
1.0
Transcribed Image Text:b. c. C,H,402 C,H402 2.00 8,58 2.83 2.08 2.02 2.13 2.14 2.94 3.00 2.6 2.5 2.4 2.3 2.2 2.1 2.0 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 0.9 4.0 3.5 3.0 2.5 2.0 1.5 1.0
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