Date Published: May 01, 2012
Publisher: International Union of Crystallography
Author(s): Li-li Liang, Meng Li, Jia-cheng Liu, Yun Wei.
In the structure of the title complex, [ZnCl2(C6H8N4)2], the ZnII atom has a distorted octahedral geometry. Two cis Cl− ions and four N atoms belonging to two different 2-(1-hydrazinylideneethyl)pyrazine ligands coordinate the ZnII atom, forming two five-membered Zn—N—C—C—N rings. The dihedral angle between the planes of these metallocycles is 88.13 (4)°. The organic ligands are essentially planar (r.m.s. deviations from planarity = 0.072 and 0.040 Å). Intermolecular N—H⋯N and N—H⋯Cl interactions join the molecules into a three-dimensional framework.
For the biochemical applications of complexes based on ligands containing pyrazine, see: Ha et al. (1999 ▶); Blackstock et al. (2000 ▶); Adams et al. (2002 ▶); Lee et al. (2012 ▶). For the preparation of the ligand, see: Stadler et al. (2010 ▶).