L1 /
5
CH1012
N + 1 RULE
Proton
Coupled Spectrum - CH3CHCl2
2 types of equivalent hydrogens ® 2 signals
db 5.9, quartet, CH da 2.0, doublet, CH3
(n + 1) Rule
An H (or
equivalent Hs)
that has n equivalent
Hs on adjacent
carbon(s) will give an
NMR signal that is
split into a multiplet
with n+1 peaks
that has n equivalent
Hs on adjacent
carbon(s) will give an
NMR signal that is
split into a multiplet
with n+1 peaks
on adjacent C
n=3, n+1= 4
on adjacent C
n=1, n+1= 2
