UC Davis

The centrosymmetric title cluster, hexa-aquadi-μ(3)-carbonato-hexa-cyclamhexa-μ(2)-hydroxido-dodeca-μ(2)-oxido-hexa-mang-an-ese(IV)hexa-manganese(III) octa-chloride tetra-cosa-hydrate, [Mn(12)(CO(3))(2)O(12)(OH)(6)(C(10)H(24)N(4))(6)(H(2)O)(6)]Cl(8)·24H(2)O, has two μ(3)-CO(3) groups that not only bridge octahedrally coordinated Mn(III) ions but also act as acceptors to two different kinds of hydrogen bonds. The carbonate anion is planar within experimental error and has an average C-O distance of 1.294 (4) Å. The crystal packing is stabilized by O-H⋯Cl, O-H⋯O, N-H⋯Cl and N-H⋯O hydrogen bonds. Two of the four independent chloride ions are disordered over five positions, and eight of the 12 independent water mol-ecules are disordered over 21 positions.