Pyridinium chloride is an organic chemical compound with a formula of C
5H
5NHCl.
Preparation
Pyridinium chloride can be produced by passing hydrogen chloride in pyridine dissolved in diethyl ether. The chemical formula is as follows:
:
C5H5N + HCl -> C5H6N+Cl- v
Acidity
Containing a
pyridinium ion, pyridinium chloride has a
pKa of approximately 5, slightly more acidic than that of typical
amine
In chemistry, amines (, ) are compounds and functional groups that contain a basic nitrogen atom with a lone pair. Amines are formally derivatives of ammonia (), wherein one or more hydrogen atoms have been replaced by a substituen ...
s. This is due to the
hybridization of the nitrogen: the nitrogen is sp
2 hybridized and more electronegative than those nitrogens in ammonium cations, which are sp
3 hybridized. Hence they are stronger acids than amines and can be more easily deprotonated by bases.
References
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Pyridinium compounds
Chlorides