Illustrated Glossary of Organic Chemistry
De
shielded
(downfield):
A nucleus whose
chemical shift
has been increased due to removal of
electron density
,
magnetic induction
, or other effects.
In this simulated
1
H-NMR spectrum
of 2-
ethyl
phenol
the 6.0 ppm
singlet
is more de
shielded
(higher
chemical shift
; further downfield) than the 1.2 ppm
triplet
.
Click on the image for a larger version
.
Related terms:
Shielded
,
upfield
,
ppm
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