Answered: The proton NMR spectrum of a compound…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

The proton NMR spectrum of a compound with formula C8H14O2 is shown. The
DEPT experimental results are tabulated. The infrared spectrum shows
medium-sized bands at 3055, 2960, 2875, and 1660 cm-1
and strong bands at
1725 and 1185 cm-1
. Draw the structure of this compound and assign the
carbon peaks.

60
6.8
6.7
4.2
41
40
1.9
1.8
1.7
1.6
15
1.4
1.3
1.2
1.1
10
0.9

Assignment
The proton NMR spectrum of a compound with formula C3H14O2 is shown. The
DEPT experimental results are tabulated. The infrared spectrum shows
-1
medium-sized bands at 3055, 2960, 2875, and 1660 cm and strong bands at
1725 and 1185 cm. Draw the structure of this compound and assign the
carbon peaks.
Normal Carbon
DEPT-135
DEPT-90
10.53 ppm
Positive
No peak
No peak
No peak
No peak
12.03
Positive
14.30
Positive
22.14
Negative
No peak
No peak
65.98
Negative
No peak
128.83
136.73
Positive
Positive
168.16
No peak
No peak (C=0)
0.97
2.05
7.92
2.96
65
60
5.5
5.0
4.5
4.0
3.5
3.0
25
20
15
1.0

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