NMR-practice 232 final PDF

Title	NMR-practice 232 final
Author	Parth Patel
Course	Organic Chemistry I
Institution	University of Illinois at Chicago
Pages	11
File Size	716.3 KB
File Type	PDF
Total Downloads	46
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Summary

NMR practice summary...

Description

Problem Set 1 - NMR Spectra Reich Chem 345

Two Isomers of C4H8O2 Problem R-16A: C4H8O2 300 MHz 1H NMR Spectrum in CDCl3 Source: Aldrich Spectral Viewer/Reich

30

20

10

0

Hz

4.2

10

9

8

7

4.1

6

2.05 2.00

5 ppm

4

3

1.30 1.25

2

1

0

Problem R-16B: C4H8O2 300 MHz 1H NMR Spectrum in CDCl3 Source: Aldrich Spectral Viewer/Reich

30

20

10

0

Hz

1.20 1.15 1.10

2.4

3.70 3.65

10

9

8

7

2.3

6

5 ppm

1

4

3

2

1

Two Isomers of C4H8O2

Problem R-16C: C4H8O2 300 MHz 1H NMR Spectrum in CDCl3 Source: Aldrich Spectral Viewer/Reich

30

20

0

10

Hz

3.00

1.8

1.7

1.6 2.06

2.11

8.1

8.0

1.00 0.95 1.01

4.15 4.10 10

9

8

7

6

5 ppm

4

3

2

1

0

Problem R-16D: C4H8O2 100 MHz 1H NMR Spectrum Source: Reich

3.07

30

20

10

0

Hz

2.12

2.00

0.97

2.4

12

11

2.3

10

1.7

9

8

1.6

7

1.0

6 ppm

2

5

4

3

2

1

0

Problem R-18L C4H9Br 300 MHz 1H NMR spectrum in CDCl3 Source: Aldrich Spectra Viewer/Reich 30

20

10

0

Hz

1.95 1.90 1.85 1.80 1.75 1.70 1.65 1.60 1.55 1.50 1.45 1.40 1.35

1.00 0.95 0.90 2.20

1.42

1.00

3.45 3.40 3.35

7

6

5

4

3

2

1

CDCl3

Problem R-18L: C4H9Br 75 MHz 13C NMR spectrum Solv: CDCl3 Source: ASV/Reich

0

13.2

8

21.3

9

34.8 33.6

10

200

180

160

140

120

100 ppm

3

80

60

40

20

0

Problem R-7N C8H10O 300 MHz 1H NMR spectrum in CDCl3 Source: Aldrich Spectra Viewer 33-09 30

7.3

7.2

7.1

7.0

6.9

20

6

5

3

1.4

2

1

0

CDCl3

120.6

129.5

14.9

ppm

Infrared Spectrum:

Problem R-7N: C8H10O 75 MHz 13C NMR spectrum Solv: CDCl3 Source: ASV/Reich

4

3.9

63.3

7

114.6

8

Hz

6.8

4.0

9

0

10

210 200 190 180 170 160 150 140 130 120 110 100 ppm 4

90

80

70

60

50

40

30

20

10

0

Problem R-7R: C5H9BrO2 300 MHz 1H NMR spectrum in CDCl3 Source: Aldrich Spectra Viewer 33-09

30

3.6

3.5

3.4

20

10

3.3

0

Hz

3.2

3.1

3.0

2.9 1.43

1.05

1.00

1.00

1.3

4.2 10

9

8

7

6

Infrared Spectrum:

5 ppm

4

3

2

1

0

100

60

40

20

1600

1400

1200

1000

800

600

400

200

61.0

14.2

cm-1

CDCl3

Problem R-7R: C5H9BrO2 75 MHz 13C NMR spectrum Solv: CDCl3 Source: ASV/Reich

1800

25.9

Change of scale at 2000 cm-1

37.8

4000 3800 3600 3400 3200 3000 2800 2600 2400 2200 2000

170.4

Percent Transmittance

80

210 200 190 180 170 160 150 140 130 120 110 100 ppm 5

90

80

70

60

50

40

30

20

10

0

Problem R-7P C9H10O 300 MHz 1H NMR spectrum in CDCl3 Source: Aldrich Spectra Viewer 33-09

U

30

8.0

7.9

7.8

20

10

7.7

0

Hz

7.6

7.5

7.4

2.32

1.54

1.00

3.1

10

9

8

7

6

3.0

5 ppm

3.0

1.25 1.20

4

3

2

1

0

8.2

31.8

132.8 128.5 127.9

136.9

200.6

Infrared Spectrum:

CDCl3

Problem R-7P C9H10O 75 MHz 13C NMR spectrum Solv: CDCl3 Source: ASV/Reich

210 200 190 180 170 160 150 140 130 120 110 100 ppm 6

90

80

70

60

50

40

30

20

10

0

Problem R-7M: C11H14O 300 MHz 1H NMR Solv: CDCl3 Source: A. Fiedler/Reich

30

20

10

0

Hz

U

6.14

7.95 7.90 ppm

7.60

7.55

7.50 7.45 ppm

7.40

2.40

7.35

2.35

2.30 ppm

2.25

2.20

2.98 2.00 2.03

1.01

2.85

8

7

6

5

1.00 ppm

2.80 ppm

4 ppm

3

2

1

0

25.1 22.8

CDCl3

47.4

132.7 128.5 128.0

137.3

199.9

Problem R-7M C11H14O 75 MHz 13C NMR spectrum in CDCl3 Source: ASV/Reich

210 200 190 180 170 160 150 140 130 120 110 100 ppm

7

90

80

70

60

50

40

30

20

10

0

Problem R-7K C5H9ClO2 250 MHz 1H NMR spectrum in CDCl3 Source: Adam Fiedler/Reich

30

20

10

0

3.26

3.13

Hz

2.16

1.00

4.45 4.40 4.35 4.30 4.25 4.20 4.15 ppm

8

7

1.35 1.30 1.25 ppm

1.70 1.65 ppm

6

5

4 ppm

3

2

1

0

Infrared Spectrum: 100

60

40

20

1800

1600

1200

1000

800

600

400

200

14.0

62.0

CDCl3

21.5

Problem R-7K: C5H9ClO2 75 MHz 13C NMR spectrum Solv: CDCl3 Source: ASV/Reich

1400

cm-1

Change of scale at 2000 cm-1

52.6

4000 3800 3600 3400 3200 3000 2800 2600 2400 2200 2000

170.1

Percent Transmittance

80

220

210

200

190

180

170

160

150

140

130

120

110 ppm

8

100

90

80

70

60

50

40

30

20

10

0

8

1.9

1.8

7

1.7

1.6

6

1.5

Hz

1.4

5 ppm

1.3

1.2

1.1

4

3

0.9

2

1

0

CDCl3

Problem R-7O: C5H8 75 MHz 13C NMR spectrum Solv: CDCl3 Source: ASV/Reich

1.0

13.4

9

2.0

0

22.0 20.4

10

2.1

20

68.2

2.2

40

84.5

Problem R-7O C5H8 300 MHz 1H NMR spectrum in CDCl3 Source: Aldrich Spectra Viewer 33-09

210 200 190 180 170 160 150 140 130 120 110 100 ppm

9

90

80

70

60

50

40

30

20

10

0

Problem R-18C C10H12O 300 MHz 1H NMR spectrum in CDCl3 Source: Aldrich Spectra Viewer/Reich

30

20

10

Hz

0

2.50 2.45 2.40

2.51

1.05 1.00 0.95 1.52

1.02

7.35 7.30 7.25 7.20 7.15

6

5

4

3

49.8

2

1

0

7.8

7

35.1

8

134.4 129.3 128.6 126.8

9

3.70 3.65 3.60

208.8

10

1.00

CDCl3

Problem R-18C: C10H12O 75 MHz 13C NMR spectrum CDCl3 Source: ASV/Reich

220

200

180

160

140

120 ppm

10

100

80

60

40

20

0

Reich Chem 345

Problem R-18R: C5H10O2 300 MHz 1H NMR Spectrum in CDCl3 Source: Aldrich Spectral Viewer/Reich

30

20

10

0

Hz 1.70 1.65 1.60

1.57

1.49 1.09

1.00

1.00 0.95 0.90 4.05 4.00 10

9

8

7

6

5 ppm

2.05 2.00 4

3

2

1

0

Problem R-18S: C5H10O2 300 MHz 1H NMR Spectrum in CDCl3 Source: Aldrich Spectral Viewer/Reich

30

20

10

0

Hz

1.7

1.00

1.6 0.96 0.66

0.64

0.95 0.90 2.35 2.30 2.25

3.70 3.65

10

9

8

7

6

5 ppm 11

4

3

2

1

0...