13C Chemical Shift Increments (ppm) for Substituted Alkanes

C Chemical Shift Increments (ppm) for Substituted Alkanes

 

Substituentαβγ
alkyl carbon (sp3) 9.1 9.4 -2.5
-C=C- (sp2) 19.5 6.9 -2.1
-C≡C- (sp) 4.4 5.6 -3.4
C6H5 22.1 9.3 -2.6
F 70.1 7.8 -6.8
Cl 31.0 10.0 -5.1
Br 18.9 11.0 -3.8
I -7.2 10.9 -1.5
OH, OR 49.0 10.1 -6.2
-C(O)OR 56.5 6.5 -6.0
NH2, NHR, NR2 28.3 11.3 -5.1
NO2 61.6 3.1 -4.6
CHO 29.9 -0.6 -2.7
C(O)R 22.5 3.0 -3.0
C(O)OH 20.1 2.0 -2.8
C(O)OR 22.6 2.0 -2.8
CONR2 22.0 2.6 -3.2
CN 3.1 2.4 -3.3

Reference: D.W. Brown, J. Chem. Educ., 62, 209 (1985); E. Pretsch, T. Clerc, J. Seibl, and W. Simon, "Tables of Spectral Data for Structure Determination of Organic Compounds," Springer-Verlag, NY, 1983, p. C90.