The NMR scale (
d
, ppm)
Chemical shift
(d)
is a relative scale so it is independent of B
o
. Same
chemical shift at 100 MHz vs. 900 MHz magnet
IMPORTANT: absolute frequency is field dependent (
n
=
g
B
o
/ 2
p
)
At higher magnetic fields an NMR
spectra will exhibit the same chemical
shifts but with higher resolution because
of the higher frequency range.