The synthesis and single-crystal X-ray structure determination of the title compound are described. The crystals are monoclinic, P2₁/c, a 10.064(2), b 13.096(2), c 17.722(3) Ǻ, β 104.68(2)°; the structure was refined to a residual of 0.033 for 3138 independent observed reflections. The coordination about zinc is intermediate between four- and five-coordinate, and the angle between the planar imidazole groups is 14.9°.