NMR and IR Spectral Correlation Tables

   

Be sure to read the additional notes and see the chart of chemical shifts below.

Infrared
1H NMR
 sp3 C-H  2850 - 3000,  AND 1350 - 1475  Si(CH4)4  0.0
 sp2 C-H  3010 - 3100  RCH3  0.8 - 1.1
 sp  C-H  3300  R-CH2-R  1.1 - 1.6
 aldehyde H-CO  2750  R3-CH  1.5 - 2.0
 O-H  3200 - 3600,  AND 1590 – 1620(w)  C=C-CHx  1.8 - 2.2
 RCOO-H  2500 – 3200 AND1510 – 1655 (w)  CHx-C=O  2.0 - 2.4
 N-H  3200 - 3500  Ar-CHx  2.1 - 2.8
 C≡C  2100 - 2260  C≡C-H  2.5
 C≡N  2220 - 2260  CHx-CN  2.4-3.0
 C=C  1600 - 1680  R-CH2-N  2.5 - 3.5
 C=C (aromatic)  1500 - 1600  Epoxide  2.5 - 3.5
 C=O  1650 - 1800  R-CHx-X, X=Cl, Br, I  2.5 - 4.0
 C-O  1000 - 1250  OCHx  3.2 - 4.5
 Epoxide  1050 - 1150  C=C-H  4.6 - 7.0
 C-N  1020 - 1220  Aromatic  6.8 - 8.5
 C-Cl  550 - 850  R-NH2, R-OH  2.0 - 7+
 C-Br  515 - 690  H-C=O  9 - 10
     R-COOH  10 - 13

Additional notes:

    - Alcohol, Acid, and Amine hydrogens are usually a bit broader than normal peaks and rarely show splitting.

    - A sharp singlet at 0.0 or 7.25d (often small) are due to Tetramethylsilane intenrnal standard or the chloroform solvent.  You can ignore them.