Pseudosymmetric fac-diaquatrichlorido[(dimethylphosphoryl)methanaminium-kappa O]manganese(II)

In the title compound, [Mn(C3H11NOP)Cl-3(H2O)(2)], the Mn-II metal center has a distorted octahedral geometry, coordinated by the three chloride ligands showing a facial arrangement. Two water molecules and the O-coordinated dpmaH cation [dpmaH = (dimethylphosphoryl)methanaminium] complete the coordination sphere. Each complex molecule is connected to its neighbours by O-H center dot center dot center dot Cl and N-H center dot center dot center dot Cl hydrogen bonds. Two of the chloride ligands and the two water ligands form a hydrogen-bonded polymeric sheet in the ab plane. Furthermore, these planes are connected to adjacent planes by hydrogen bonds from the aminium function of cationic dpmaH ligand. A pseudo-mirror plane perpendicular to the b axis in the chiral space group P2(1) is observed together with inversion twinning [ratio = 0.864 (5):0.136 (5)].