1334X_08_ch8_233-308.qxd 04/01/1904 03:01 PM Page 264
Table 8.4 Compilation of 1H NMR Absorptions for Various Molecules
Listed below are the 1H NMR chemical shifts observed for the protons of a number of
organic compounds. The shifts are classified according to whether they are methyl,
methylene, or methine types of hydrogen atoms. The atom shown in bold is responsible for the absorptions listed below.
Methyl Absorptions
Compound
, ppm
CH3NO2
4.3
CH3CHO
2.2
CH3F
4.3
CH3I
2.2
(CH3)2SO4
3.9
(CH3)3N
2.1
Compound
, ppm
C6H5COOCH3
3.9
CH3CON(CH3)2
2.1
C6H5—O—CH3
3.7
(CH3)2S
2.1
CH3COOCH3
3.6
CH2C(CN)CH3
2.0
CH3OH
3.4
CH3COOCH3
2.0
(CH3)2O
3.2
CH3CN
2.0
CH3Cl
3.0
CH3CH2I
1.9
C6H5N(CH3)2
2.9
CH2CH–C(CH3)CH2
1.8
1334X_08_ch8_233-308.qxd 04/01/1904 03:01 PM Page 265
Table 8.4 Compilation of 1H NMR Absorptions for Various Molecules (continued)
Methyl Absorptions
, ppm
Compound
Compound
, ppm
(CH3)2NCHO
2.8
(CH3)2CCH2
1.7
CH3Br
2.7
CH3CH2Br
1.7
CH3COCl
2.7
C6H5C(CH3)3
1.3
CH3SCN
2.6
C6H5CH(CH3)2
1.2
C6H5COCH3
2.6
(CH3)3COH
1.2
(CH3)2SO
2.5
C6H5CH2CH3
1.2
C6H5CH CHCOCH3
2.3
CH3CH2OH
1.2
C6H5CH3
2.3
(CH3CH2)2O
1.2
(CH3CO)2O
2.2
CH3(CH2)3
1.0
C6H5OCOCH3
2.2
CH3(CH2)4CH3
0.9
C6H5CH2N(CH3)2
2.2
(CH3)3CH
0.9
Methylene Absorptions
, ppm
© 2006 Thomson Brooks/Cole, a part of The Thomson Corporation
Compound
Compound
, ppm
EtOCOC(CH3)CH2
5.5
C6H5CH2N(CH3)2
10.0
CH2Cl2
5.3
CH3CH2SO2F
9.9
CH2Br2
4.9
CH3CH2I
9.8
(CH3)2CCH2
4.6
C6H5CH2CH3
3.3
CH3COO(CH3)CCH2
4.6
CH3CH2SH
3.3
C6H5CH2Cl
4.5
(CH3CH2)3N
3.1
(CH3O)2CH2
4.5
(CH3CH2)2CO
2.6
C6H5CH2OH
4.4
BrCH2CH2CH2Br
2.4
CF3COCH2C3H7
4.3
Cyclopentanone (
-CH2)
2.4
Et2C(COOCH2CH3)2
4.1
Cyclohexene (
-CH2)
2.4
HCC—CH2Cl
4.1
Cyclopentane
2.4
CH3COOCH2CH3
4.0
Cyclohexane
2.0
CH2CHCH2Br
3.8
CH3(CH2)4CH3
2.0
HCCCH2Br
3.8
Cyclopropane
1.5
BrCH2COOCH3
3.7
C6H5CHO
1.4
CH3CH2NCS
3.6
4-ClC6H4CHO
1.4
CH3CH2OH
3.6
4-CH3OC6H4CHO
0.2
CH3CH2CH2Cl
3.5
CH3CHO
9.7
(CH3CH2)4
3.4
Pyridine (
-H)
8.5
CH3CH2Br
3.4
1,4-C6H4(NO2)2
8.4
N+I
1334X_08_ch8_233-308.qxd 04/01/1904 03:01 PM Page 266
Methylene Absorptions
Compound
C6H5CHCHCOCH3
, ppm
7.9
Compound
, ppm
p-Benzoquinone
6.8
C6H5CHO
7.6
C6H5NH2
6.6
Furan (
-H)
7.4
Furan (-H)
6.3
Naphthalene (-H)
7.4
CH3CHCHCOCH3
5.8
1,4-C6H4I2
7.4
Cyclohexene (vinylic H)
5.6
1,4-C6H4Br2
7.3
(CH3)2CCHCH3
5.2
1,4-C6H4Cl2
7.2
(CH3)2CHNO2
4.4
C6H6
7.3
Cyclopentyl bromide (H at C1)
4.4
C6H5Br
7.3
(CH3)2CHBr
4.2
C6H5Cl
7.2
(CH3)2CHCl
4.1
CHCl3
7.2
C6H5CCH
2.9
CHBr3
6.8
(CH3)3CH
1.6