(1,4,7,10-Tetra­aza­cyclo­dodecane-κ(4) N (1),N (4),N (7),N (10))(tetra­oxidomolybdato-κO)copper(II) monohydrate

In the title compound, [CuMoO(4)(C(8)H(20)N(4))]·H(2)O, the Cu(II) atom is coordinated by four N atoms of the 1,4,7,10-tetra­aza­cyclo­dodecane (cyclen) ligand and one O atom of the molybdate unit in a distorted square-pyramidal environment. The water mol­ecules are linked to the complex unit to form centrosymmetric dimers [R (4) (4)(12) and R (4) (4)(16)] and discrete D (3) (2)(9), D (3) (3)(11) and D (3) (3)(13) chains by O—H⋯O and N—H⋯O inter­actions. Additionally, the complex mol­ecules are linked into C (4) (4)(18) chain motifs by N—H⋯O inter­actions. As a result [(cyclen)CuMoO(4)] units and water molecules are linked to layers that are oriented parallel to the ac plane. The stacking of the layers in the b-axis direction is supported by weak C—H⋯O hydrogen bridges.