metal-organic compounds
In the title compound, [Mn(H2O)6]Cl2·2C6H12N4·4H2O, each MnII atom, located on a centre of symmetry, is coordinated by six water molecules in a distorted octahedral coordination geometry. The hexamethylenetetramine (HMTA) molecule does not coordinate to the Mn atom but links with the Mn complex via three O—HN hydrogen bonds. The remaining N atom of the HMTA is hydrogen-bonded to the solvent water molecule.