catena-Poly[[[diaqua­manganese(II)]-μ-oxalato] monohydrate]

In the title compound, {[Mn(C₂O₄)(H₂O)₂]·H₂O}_n, the octa­hedrally coordinated Mn atom, lying on a twofold rotation axis, is bonded to four carbox­yl O atoms from oxalate groups and two O atoms from two water mol­ecules. By means of the bridging oxalate ligand, the title compound exhibits a one-dimensional chain structure. The crystal packing is stabilized by hydrogen bonds of the type O—H...O(oxalate).

Pyridine­{4,4',6,6'-tetra­bromo-2,2'-[1,2-phenyl­enebis(nitrilo­methyl­idyne)]diphenolato}zinc(II) dimethyl­formamide solvate

The tetra­dentate Schiff base ligand derived from the condensation of 3,5-dibromo­salicylaldehyde and 1,2-phenyl­enediamine, in the presence of pyridine, forms a square-pyramidal five-coordinate Zn complex, [Zn(C₂₀H₁₀Br₄N₂O₂)(C₅H₅N)]·C₃H₇N0.