Crystal structure of di­chlorido­{N (1)-phenyl-N (4)-[(quinolin-2-yl-κN)methylidene]benzene-1,4-diamine-κN (4)}mercury(II)

In the mononuclear title complex, [HgCl(2)(C(22)H(17)N(3))], synthesized from the quinoline-derived Schiff base N (1)-phenyl-N (4)-[(quinolin-2-yl)methyl­idene]benzene-1,4-di­amine (PQMBD) and HgCl(2), the coordination sphere around the Hg(2+) atom is distorted tetra­hedral, comprising two Cl atoms [Hg—Cl = 2.3487 (14) and 2.4490 (15) Å] and two N atom donors from the PQMBD ligand, viz. the quinolyl and the imine N atom [Hg—N = 2.270 (4) and 2.346 (4) Å, respectively]. The dihedral angle between the two benzene rings attached to the amino group is 43.7 (3)°. In the crystal, N—H⋯Cl and C—H⋯Cl hydrogen bonds, as well as π–π stacking inter­actions between one phenyl ring and the pyridine ring of the quinoline moiety of an adjacent mol­ecule [centroid-to-centroid separation = 3.617 (4) Å] are observed, resulting in a three-dimensional network.