A binuclear unsymmetrical compartmental NiII complex: [μ‐11,24‐dimethyl‐16,19‐dioxa‐3,7,15,20‐tetraazatricyclo[20.3.1.19,13]heptacosa‐1(25),2,7,9,11,13(27),14,20,22(26),23‐decaene‐26,27‐diolato]bis[diaquanickel(II)] bis(perchlorate) tetrahydrate

In the title compound, [Ni2(C23H24N4O4)(H2O)4](ClO4)2·4H2O, each NiII atom is coordinated by two bridging phenoxide O atoms, two azomethine N atoms and two water mol­ecules in a slightly distorted octa­hedral geometry. The crystal packing is stabilized by inter­molecular O—H⋯O hydrogen bonds mediated through the water mol­ecules and perchlorate anions. The bis­(amino­oxy)ethane and diamino­propane groups are disordered across the centre of the mol­ecule, and as a result the complex mol­ecule and the crystal structure is centrosymmetric.