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Methyl (R-CH3)
0.9 ppm
Methylene (R-CH2-R)
1.2 ppm
Methine (CH)
1.7 ppm
Allylic
2 ppm
Alkynyl
2.5 ppm
Aromatic methyl
2.5 ppm
Alkyl halide
2-4 ppm
Vinylic
4.5-6.5 ppm
Aryl
6.5-8 ppm
Alcohol (R-O-H)
2-5 ppm
Aldehyde
10 ppm
Carboxylic acid
12 ppm
Effect of neighboring oxygen of alcohol or ether on alpha protons
+2.5
Effect of neighboring oxygen of an alcohol or either on beta protons
+0.5
Effect of neighboring oxygen of an ester on alpha proton
+3
Effect of neighboring oxygen of an ester on beta protons
+0.6
Effect of neighboring carbonyl group on alpha protons
+1
Effect of neighboring carbonyl group on beta protons
+0.2