NMR delta values Flashcards
(33 cards)
1
Q
-CH3
methyl
A
0.9
2
Q
-CH2-
methylene
A
1.3
3
Q
-CH(-)-
methine
A
1.4
4
Q
-C(=O)-CH3
methyl ketone
A
2.1
5
Q
-C(trip)C-H
acetylenic
A
2.5
6
Q
R-CH2-X or R-CH2-O
A
3-4
7
Q
R2C=CRH
vinyl
A
5-6
8
Q
R2C=CRCH3
allylic
A
1.7
9
Q
Ph-H
aromatic
A
7.2
10
Q
Ph-CH3
benyzlic
A
2.3
11
Q
R-C(=O)-H
aldehyde
A
9-10
12
Q
R-C(=O)-OH
acid
A
10-12 (broad)
13
Q
R-OH
alcohol
A
variable; 2-5 (broad)
14
Q
Ph-OH
phenol
A
variable; 4-7 (broad)
15
Q
R-NH2
amine
A
variable; 1.5-4 (broad)
16
Q
ethyl group signature
A
downshifted 1-3-3-1 quartet
17
Q
R2HC-CHR2
coupling constant
A
7 Hz
18
Q
cis RHC=CHR
coupling constant
A
10 Hz
19
Q
trans RHC=CHR
coupling constant
A
15 Hz
20
Q
geminal R2C=CH2
coupling constant
A
2 Hz
21
Q
ortho ring
coupling constant
A
8 Hz
22
Q
meta ring
coupling constant
A
2 Hz
23
Q
allylic C=C-CH
coupling constant
A
6 Hz
24
Q
carbonyl
13C-NMR region
A
160-210
25
aromatic C
| 13C-NMR region
110-150
26
alkene
| 13C-NMR region
100-150
27
alkyne
| 13C-NMR region
75-95
28
C-O
| 13C-NMR region
55-90
29
C-Cl, C-Br
| 13C-NMR region
30-65
30
Alkane
| 13C-NMR region
0-35
31
R2CH-NH2
| H alpha to amine
2-3
| further out are downshifted
32
C-NR2
| 13C-NMR region
30-50
33
R2CH-COOH/H/R
| alpha to carbonyl
2-2.5
| further out are downshifted
