Di-aqua-bis-(dl-α-lipoato-κ ,')manganese(II).

The manganese(II) coordination compound, [Mn(CHSO)(HO)], with two bidentate α-lipoate ligands and two coordinating water mol-ecules, has been structurally characterized. The cantral Mn atom lies on a crystallographic twofold rotation axis and adopts a distorted octa-hedral coordination environment, with carboxyl-ate groups chelating the metal in a κ ,'-binding mode. One of the sulfur atoms within the 1,2-di-thiol-ane ring exhibits positional disorder over two sites, with refined occupancies of 0.92 and 0.08. The complex is isostructural with previously reported Zn and Cd analogues, both of which also display positional disorder in the 1,2-di-thiol-ane ring. The mol-ecules are linked inter-molecular O-H⋯O and C-H⋯S hydrogen bonds into a di-periodic supramolecular framework parallel to (100).