Functional Type	Chemical Shift (ppm)
Carbonyl compounds, C=O aldehyde and ketone carboxylic acid and ester amide	220-185 185-160 180-150
, Nitrile	130-120
, Alkyne	100-60
, aromatic and alkene	170-100
O-C, ether	90-60
C-X, alkyl halide	65-10
RCH2R, Alkyl	50-0

last updated: Wednesday, April 4, 2001