Proton, Carbon-13 and Nitrogen Chemical Shift Ranges - Nitrogen*

Group or ClassRange (ppm)
Amines, primary: RNH2 -300 to -380
Amines, secondary: R2NH -280 to -360
Amines, tertiary: R3N -330 to -340
Ammonium ions -270 to -360
Anilinium ions -310 to -330
Aminophosphines -280 to -330
Amides -220 to -270
Isocyanates: RNCO -320 to -350
Cyanates: ROCN -190 to -210
Isothiocyanates: RNCS -260 to -270
Thiocyanates: RSCN -100 to -200
Nitriles: RCN -120 to -140
Isonitriles: RNC -180 to -220
Pyridines -10 to -220
Imines: RCH=NH -60 to -80
Nitro compounds: RNO2 +40 to -30
Azo compounds: R-N=N-R +180 to +130
Nitrosamines: R2N-N=O +190 to +130
Nitroso compounds: RN=O +500 to +400

Relative to NO3 - The ranges may be used to approximate both 14N and 15N chemical shifts.

Reference: Silverstein, Bassler and Morrill, Ch. 4 (proton data); Breitmaier and Voelter (carbon-13 data); G.C. Levy and R.L. Lichter, "Nitrogen-15 Nuclear Magnetic Resonance Spectroscopy," Wiley-Interscience, NY, 1979 (nitrogen data).