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The crystal structure of Zn(C3H4N2)2C12 has been determined and refined from three-dimensional X-ray data. The unit cell is monoclinic with the constants a= 7.956, b= 11"856 and c= 12.078 A, all +0.005 A, /~= 113°58'+2 '. The space group is P21/c; there is one formula unit in the asymmetric unit and all atoms occupy general fourfold positions. The coordination of the zinc atom is tetrahedral and the bond distances are: Zn-N, 2.00 and 2.02 A; Zn-CI, 2.24 and 2-26 A. Hydrogen bonds are assumed between the chlorine atoms and the imidazole nitrogen atoms that are not bonded to zinc. There are two such bonds in the structure and their lengths are 3-27 and 3.34 A respectively. THE CRYSTAL STRUCTURE OF DI-IMIDAZOLE-ZINC(II) DICHLORIDE Acta Cryst. 8, 478.

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