NMR delta values Flashcards by Bee Who

Q

-CH3

methyl

A

0.9

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

-CH2-

methylene

A

1.3

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

-CH(-)-

methine

A

1.4

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

-C(=O)-CH3

methyl ketone

A

2.1

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

-C(trip)C-H

acetylenic

A

2.5

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

R-CH2-X or R-CH2-O

A

3-4

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

R2C=CRH

vinyl

A

5-6

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

R2C=CRCH3

allylic

A

1.7

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Ph-H

aromatic

A

7.2

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Ph-CH3

benyzlic

A

2.3

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

R-C(=O)-H

aldehyde

A

9-10

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

R-C(=O)-OH

acid

A

10-12 (broad)

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

R-OH

alcohol

A

variable; 2-5 (broad)

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Ph-OH

phenol

A

variable; 4-7 (broad)

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

R-NH2

amine

A

variable; 1.5-4 (broad)

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

ethyl group signature

A

downshifted 1-3-3-1 quartet

Q

R2HC-CHR2

coupling constant

A

7 Hz

Q

cis RHC=CHR

coupling constant

A

10 Hz

Q

trans RHC=CHR

coupling constant

A

15 Hz

Q

geminal R2C=CH2

coupling constant

A

2 Hz

Q

ortho ring

coupling constant

A

8 Hz

Q

meta ring

coupling constant

A

2 Hz

Q

allylic C=C-CH

coupling constant

A

6 Hz

Q

carbonyl

13C-NMR region

A

160-210

Q

aromatic C

13C-NMR region

A

110-150

Q

alkene

13C-NMR region

A

100-150

Q

alkyne

13C-NMR region

A

75-95

Q

C-O

13C-NMR region

A

55-90

Q

C-Cl, C-Br

13C-NMR region

A

30-65

Q

Alkane

13C-NMR region

A

0-35

Q

R2CH-NH2

H alpha to amine

A

2-3

further out are downshifted

Q

C-NR2

13C-NMR region

A

30-50

Q

R2CH-COOH/H/R

alpha to carbonyl

A

2-2.5

further out are downshifted