1H-NMR Chemical Shifts Values Flashcards
1
Q
Primary alkyl Protons (methyl protons) R-C-H3
A
0.8 ppm
2
Q
Secondary alkyl protons (methylene protons)
R1-CH2_R2
A
1.3ppm
3
Q
Tertiary Alkyl protons (methine protons)
R1-CH-R2-R3
A
1.5ppm
4
Q
Allylic protons (next to C=C DB)
R1R2-C=C-R-CH3
A
1.8ppm
5
Q
Benzylic protons (next to aromatic ring)
(Benzine ring )⌬-CH2-R
A
2.3ppm
6
Q
Ketone a-protons
R1-C=O-CH2-R2
A
2.2ppm
7
Q
Terminal Alkyne (acetylenic proton)
R-C≡C-H
A
2.5 ppm
8
Q
Haloalkane (X=Cl, Br,I)
R1-CH2-X
A
3.5ppm
9
Q
Ether
R1-CH2-OR2
A
3.6-3.8 ppm
10
Q
Alcohol R1-CH2-OH
A
3.9 ppm
11
Q
Terminal Alkene (H2C=CR2)
A
4.8ppm
12
Q
Internal Alkene (R2-C=CH-R)
A
5.5ppm
13
Q
Aromatic Protons (will often appear as multiplet) ⌬-R
A
7.3ppm
14
Q
Aldehydic Proton (can couple with α- protons) R1-C=O-H
A
10.00ppm
15
Q
Carboxylic proton (signal will be broad singlet (br s))
R1-C=O-O-H
A
12.00 ppm
