Acta Cryst. (2013). E69, m610-m611
[ doi:10.1107/S1600536813028006 ]
Abstract: The asymmetric unit of the title salt, (C7H11N2)2[CuCl4], comprises half a tetrahedral tetrachloridocuprate anion, being located on a twofold axis, and a protonated 4-(dimethylamino)pyridine cation. The geometry around the CuII ion is highly distorted with the range of Cl-Cu-Cl angles being 94.94 (1)-141.03 (1)°. The crystal structure is stabilized by N-HCl and C-HCl hydrogen bonds. In the three-dimensional network, cations and anions pack in the lattice so as to generate chains of [CuCl4]2- anions separated by two orientations of cation layers, which are interlocked through - stacking contacts between pairs of pyridine rings, with centroid-centroid distances of 3.7874 (7) Å.
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