Use the HNMR spectra shown here to determine the structural formula for the unknown cited below. Begin by calculating the degree of unsaturation for the compound. This will help you determine the total number of pi bonds plus rings that are possible for the structure. The table of chemical shift values are provided. Structure AC,H13NDDS6.PPM ecquency than the chemical shift of methylene protons (hydrogens attached to an spThe values are approximate because they are affected by neighboring substituents.Approximate Values of Chemical Shifts for 'H NMR°The Characteristic Values of ChTable 14.1Approximatechemical shiftApproximatechemical shift(ppm)Type of proton(ppm)Type of proton-CH30.85I-H-2.5-4-CH2-1.20Br-C-H2.5-4-CH-1.55Cl-C-H3-4C=C-CH31.7F-C-H4-4.5-C-CH32.1R-NH2Variable, 1.5-4R-OHVariable, 2-5CH32.3OH-Variable, 4-7-C=C-H2.4H-6.5-8R-0-CH33.3H-9.0-10R-C=CH24.7Variable, 10-12RС-ОНR-C=C-H5.3Variable, 5-8R R-C-NH2Tabletrumindsmilar environment. Similarly, the chemicalhomical shift of methylimilarurbon that is ou

NMR( nuclear magnetic resonance): With the help of NMR we can draw the structure of the molecule…

Answered: Structure A C,H13N D 6 3 PPM

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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Use the HNMR spectra shown here to determine the structural formula for the unknown cited below. Begin by calculating the degree of unsaturation for the compound. This will help you determine the total number of pi bonds plus rings that are possible for the structure. The table of chemical shift values are provided.

ecquency than the chemical shift of methylene protons (hydrogens attached to an sp
The values are approximate because they are affected by neighboring substituents.
Approximate Values of Chemical Shifts for 'H NMR°
The Characteristic Values of Ch
Table 14.1
Approximate
chemical shift
Approximate
chemical shift
(ppm)
Type of proton
(ppm)
Type of proton
-CH3
0.85
I-
H-
2.5-4
-CH2-
1.20
Br-C-H
2.5-4
-CH-
1.55
Cl-C-H
3-4
C=C-CH3
1.7
F-C-H
4-4.5
-C-CH3
2.1
R-NH2
Variable, 1.5-4
R-OH
Variable, 2-5
CH3
2.3
OH-
Variable, 4-7
-C=C-H
2.4
H-
6.5-8
R-0-CH3
3.3
H-
9.0-10
R-C=CH2
4.7
Variable, 10-12
R
С-ОН
R-C=C-H
5.3
Variable, 5-8
R R
-C-NH2
Table
trum
inds
milar environment. Similarly, the chemical
homical shift of methyl
imilar
urbon that is ou

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