4-[(E)-2-(2-Chloro-benzyl-idene)hydrazin-1-yl]quinolin-1-ium chloride dihydrate

Abstract

In the title hydrated salt, C(16)H(13)ClN(3) (+)·Cl(-)·2H(2)O, a small twist is evident in the cation so that the chloro-benzene ring is not coplanar with the central hydrazinyl group [the N-C-C-C torsion angle = -4.8 (12)°]. The conformation about the imine N=C bond [1.284 (10) Å] is E. The components of the structure are connected into a three-dimensional architecture via O-H⋯O, O-H⋯Cl and N-H⋯Cl hydrogen bonds. One water H atom is disposed over two sites of equal occupancy.

Fig. 1.

The molecular structure showing the atom-labelling scheme and displacement ellipsoids at the 50% probability level. Only one position of the disordered H atoms of the O2w water molecule is shown.

Fig. 2.

Detail of the hydrogen bonding along the a axis in (I). The O—H···O, O—H···Cl and N—H···Cl hydrogen bonds are shown as orange, green and blue dashed lines, respectively. Only the chloride anions, water molecules and N-bound H atoms are illustrated. The water molecule was disordered with sites of equal weight being resolved for one water-H atom (see text).

Fig. 3.

A view in projection down the a axis of the unit-cell contents of (I). The O—H···O, O—H···Cl and N—H···Cl hydrogen bonds are shown as orange, green and blue dashed lines, respectively.