4-(Dimethylamino)pyridinium tetrachloridoferrate(III)

The title salt, (C7H11N2)[FeCl4], consists of one essentially planar (the r.m.s. deviation for all non-H atoms being 0.004 Å) 4-(dimethyl-amino)-pyridinium cation and a tetra-hedral tetra-chloridoferrate(III) anion. The cations and anions are arranged in layers parallel to (010). Besides electrostatic inter-actions, the crystal packing features N-H⋯Cl and C-H⋯Cl hydrogen bonds between cations and anions, forming a three-dimensional network.