Illustrated Glossary of Organic Chemistry
Protic:
A
hydrogen bond donor
. Often said of a
solvent
.
Methanol
(
CH
3
OH
) is protic because it can
donate a hydrogen
for
hydrogen bonding
. In this illustration the
hydrogen bond donor
molecule is shown in red, and the
hydrogen bond acceptor
molecule in blue. Other common
protic solvents
include
water
(
H
2
O
),
ethanol
(
CH
3
CH
2
OH
), and
acetic acid
(
CH
3
COOH
).
Acetone
is
aprotic
. Its oxygen atom is a
hydrogen bond acceptor
, the molecule has no hydrogen with enough
δ
+
charge
to be a
hydrogen bond donor
.
Related terms:
Aprotic solvent
,
proticity
,
noncovalent molecular force
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