Bis{mu-6,6'-dimethoxy-2,2'-[propane-1,2-diylbis(iminomethylene)]diphenolato}bis[aquacopper(II)] dihydrate

In the title compound, [Cu(2)(C(19)H(24)N(2)O(4))(2)(H(2)O)(2)].2H(2)O, the asymmetric unit consists of one half of the bis{mu-6,6'-dimethoxy-2,2'-[propane-1,2-diylbis(iminomethylene)]diphenolato}bis[aquacopper(II)] complex and two water molecules. Two Cu(II) centres are bridged through a pair of phenolate groups, resulting in a complex with a centrosymmetric structure, with the centre of inversion at the middle of the Cu(2)O(2) plane. The Cu atoms are in a slightly distorted square-pyramidal coordination environment (tau = 0.07). The average equatorial Cu-O bond length and the axial Cu-O bond length are 1.928 (3) and 2.486 (3) A, respectively. The Cu-O(water) bond length is 2.865 (4) A, so the compound could be described as having a weakly coordinating water molecule at each Cu(II) ion and two solvent water molecules per dimetallic unit. The Cu...Cu distance and Cu-O-Cu angle are 3.0901 (10) A and 87.56 (10) degrees , respectively. The molecules are linked into a sheet by O-H...O and C-H...O hydrogen bonds parallel to the [001] plane.