Hexaaqua­manganese(II) bis­{[N-(3-meth­oxy-2-oxidobenzyl­idene)glycylglycinato]copper(II)} hexa­hydrate

The ligand N-(2-hydr­oxy-3-methoxy­benzyl­idene)glycylglycine (H(3) L), a Schiff base derived from glycylglycine and 3-methoxy­salicylaldehyde, was used in the synthesis of a new organic–inorganic coordination complex, [Mn(H(2)O)(6)][Cu(C(12)H(11)N(2)O(5))](2)·6H(2)O. The Mn(II) atom is located on an inversion center and is coordinated to six water mol­ecules in a slightly distorted octa­hedral geometry. The Cu(II) atom is chelated by the tetra­dentate Schiff base ligand in a distorted CuN(2)O(2) square-planar coordination. In the crystal structure, the complex [Mn(H(2)O)(6)](2+) cations and the [CuL](−) anions are arranged in columns parallel to the a axis and are held together by O—H⋯O hydrogen bonding. Additional hydrogen bonds of the same type further link the columns into a three-dimensional network.