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metal-organic compounds
The NiII ion in the title compound, [Ni(H2PO4)2(C10H24N4)], is six-coordinate in a distorted square bipyramidal environment. The crystal structure consists of two molecules of the title compound, each residing on a centre of inversion. Four tetramine N atoms of the macrocyclic ligand are equatorial [average Ni—N distance = 2.07 (1) Å] and two O atoms, one from each dihydrogen phosphate ion, are axial [average Ni—O distance = 2.12 (3) Å]. The structure of the title complex consists of a three-dimensional framework, which delimits intersecting a axis, b axis and c axis tunnels. Two types of hydrogen bonds, O—HO and N—HO, ensure the cohesion and stability of the molecular packing.