(Acetonitrile){2-[bis­(pyridin-2-ylmethyl-κ²N)amino-κN]-N-(2,6-dimethyl­phen­yl)acetamide-κO}(perchlorato-κO)zinc (acetonitrile){2-[bis­(pyridin-2-ylmethyl-κ²N)amino-κN]-N-(2,6-dimethyl­phen­yl)acetamide-κO}zinc tris­(perchlorate)

In the title salt, [Zn(C₂₂H₂₄N₄O)(CH₃CN)][Zn(ClO₄)(C₂₂H₂₄N₄O)(CH₃CN)](ClO₄)₃, two differently coordinated zinc cations occur. In the first complex, the metal ion is coordinated by the N,N′,N′′,O-tetra­dentate acetamide ligand and an acetonitrile N atom, generating an approximate trigonal–bipyramidal coordination geometry, with the O atom in an equatorial site and the acetonitrile N atom in an axial site. In the second complex ion, a perchlorate ion is also bonded to the zinc ion, generating a distorted trans-ZnO₂N₄ octa­hedron. Of the uncoordinating perchlorate ions, one lies on a crystallographic twofold axis and one lies close to a twofold axis and has a site occupancy of 0.5. N—H...O and N—H...(O,O) hydrogen bonds are observed in the crystal. Disordered solvent mol­ecules occupy about 11% of the unit-cell volume; their contribution to the scattering was removed with the SQUEEZE routine of the PLATON program [Spek (2009). Acta Cryst. D65, 148–155.].