Astemizole tetra­chloro­cobaltate(II)

The structure of {3-[(4-fluoro­phenyl)­methyl]-1H-benzim­id­azol-2-yl­idene}{1-[2-(4-methoxy­phenyl)­ethyl]-4-piperidin-1-io}­ammonium tetra­chloro­cobaltate(II), (C₂₈H₃₃FN₄O)[CoCl₄], is isomorphous with its CuCl₄²⁻ analogue. It contains diprotonated cations of astemizole hydrogen-bonded to three Cl atoms in two different CoCl₄²⁻ anions, with Cl⋯N distances in the range 3.109 (5)–3.212 (5) Å. One of the Cl atoms in the CoCl₄²⁻ anion is disordered and the geometry around cobalt is distorted tetrahedral. The phenyl­ethyl C atoms of the (4-methoxy­phenyl)­ethyl group attached to the piperidine ring are disordered, indicating the presence of two conformers in the crystal.