catena-Polydichloridomercury(II)-μ-14-bis­(3-pyridyl­amino­meth­yl)benzene-κ2 N:N′ NN-dimethyl­formamide monosolvate

摘要

The crystal structure of the polymeric title compound, {[HgCl2(C18H18N4)]·C3H7NO}n, features an N-heterocyclic ligand which links adjacent HgCl2 units into a helical chain running along the b axis. The coordination geometry of the Hg^II atom is a distorted tetra­hedron. The dimethyl­formamide mol­ecule is disordered over two positions in a 1:1 ratio, and is linked to the complex mol­ecules via N—H⋯O hydrogen bonds.