title: Crystal structure of 4-carbamoylpyridinium chloride.
abstract: The hydro-chloride salt of isonicotinamide, C6H7N2O(+)·Cl(-), has been synthesized from a dilute solution of hydro-chloric acid in aceto-nitrile. The compound displays monoclinic symmetry (space group C2/c) at 150 K, similar to the related hydro-chloride salt of nicotinamide. The asymmetric unit contains one protonated isonicotinamide mol-ecule and a chloride anion. An array of hydrogen-bonding inter-actions, including a peculiar bifurcated pyridinium-chloride inter-action, results in linear chains running almost perpendicularly in the [150] and [1-50] directions within the structure. A description of the hydrogen-bonding network and comparison with similar compounds are presented.
authors.affiliation: Department of Chemistry, University of Hull, Cottingham Road, Hull HU6 7RX, United Kingdom.
authors.forename: Simon M
authors.initials: SM
authors.lastname: Fellows
authors.affiliation: Department of Chemistry, University of Hull, Cottingham Road, Hull HU6 7RX, United Kingdom.
authors.forename: Timothy J
authors.initials: TJ
authors.lastname: Prior
keywords: crystal structure; hydrogen bonding; hydro­chloride; isonicotinamide