Bis[tris(oxamide dioxime-κ2N,N′)cobalt(III)] oxalate bis(sulfate) dodecahydrate

Abstract

In the title compound, [Co(C2H6N4O2)3]2(C2O4)(SO4)2­12H2O, the Co3+ ion adopts a distorted octa­hedral coordination involving six imino N atoms of three bidentate oxamide dioxime ligands. The oxalate ion is centrosymmetric. The bulk structure is consolidated by a network of O—H⋯O and N—H⋯O hydrogen bonds, inter­connecting the building blocks in such a manner that the framework delineates infinite channels parallel to [100]. The 12 water mol­ecules are lodged inside the channels, six of them being O—H⋯O and N—H⋯O bonded to the ionic species, whilst the other six, located along the central axis of the channel, form infinite cyclo­hexa­meric water tapes. Two of the water mol­ecules are disordered over two sites, in 0.786 (7):0.214 (7) and 0.637 (8):0.363 (8) ratios.