Diaqua-bis(N,N-diethyl-nicotinamide-N ¹)bis-(4-formyl-benzoato-O ¹)manganese(II)

The title compound, [Mn(C⁸H⁵O³) ²(C¹⁰H¹⁴N²O)²(H ²O)²], contains one Mn^II atom lying on an inversion centre, two 4-formyl-benzoate and two diethyl-nicotinamide ligands and two coordinated water mol-ecules. All ligands are monodentate. The four O atoms around the Mn atom form a slightly distorted equatorial plane, while the distorted octa-hedral coordination is completed by the two N atoms in the axial positions. An intra-molecular O - H⋯O hydrogen bond occurs in the complex. In the crystal structure, O - H⋯O hydrogen bonds link the mol-ecules through an R 2 ²(16) ring motif, forming a one-dimensional chain along the a axis. The π-π contact between the pyridyl rings [centroid-centroid distance = 3.629 (2) Å] may further stabilize the structure.