Bis(dihydrogen phosphato-O)[(1SR,4SR,8RS,11RS)-1,4,8,11-tetraazacyclotetradecane-κ⁴N]nickel(II)

The Ni^II 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—H...O and N—H...O, ensure the cohesion and stability of the molecular packing.

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