{μ-1,5-Bis[(E)-1-(2-pyrid­yl)ethyl­idene]carbonohydrazidato(1−)}bis­[chlorido­methano­lcopper(II)] perchlorate

The title dinuclear copper complex, [Cu(2)(C(15)H(15)N(6)O)Cl(2)(CH(3)OH)(2)]ClO(4), was prepared by the reaction of copper(II) chloride with bis­[1-(2-pyrid­yl)ethyl­idene]carbonohydrazide in the presence of sodium perchlorate in a methanol solution. It features a mono-deprotonated bis-tridentate ligand, which coordinates to two independent Cu(II) ions, one of which is coordinated by pyridyl N, hydrazyl N and carbonyl O atoms. The second Cu(II) ion is coordinated by the pyridyl N and two hydrazyl N atoms from different hydrazyl groups. The coordination environments of both Cu(II) ions are completed by a chloride ion and a methanol mol­ecule. The dihedral angle between the pyridyl groups is 27.46 (10)°. The crystal packing is stabilized by O—H⋯O(perchlorate), O—H⋯Cl and N—H⋯Cl hydrogen bonding.