Crystal structure of di­aqua­bis­(N,N-di­ethyl­nicotinamide-κN (1))bis­(2,4,6-tri­methyl­benzoato-κO (1))cobalt(II)

The centrosymmetric mol­ecule in the monomeric title cobalt complex, [Co(C(10)H(11)O(2))(2)(C(10)H(14)N(2)O)(2)(H(2)O)(2)], contains two water mol­ecules, two 2,4,6-tri­methyl­benzoate (TMB) ligands and two di­ethyl­nicotinamide (DENA) ligands. All ligands coordinate to the Co(II) atom in a monodentate fashion. The four O atoms around the Co(II) atom form a slightly distorted square-planar arrangement, with the distorted octa­hedral coordination sphere completed by two pyridine N atoms of the DENA ligands. The dihedral angle between the planar carboxyl­ate group and the adjacent benzene ring is 84.2 (4)°, while the benzene and pyridine rings are oriented at a dihedral angle of 38.87 (10)°. The water mol­ecules exhibit both intra­molecular (to the non-coordinating carboxyl­ate O atom) and inter­molecular (to the amide carbonyl O atom) O—H⋯O hydrogen bonds. The latter lead to the formation of layers parallel to (100), enclosing R (4) (4)(32) ring motifs. These layers are further linked via weak C—H⋯O hydrogen bonds, resulting in a three-dimensional network. One of the two ethyl groups of the DENA ligand is disordered over two sets of sites with an occupancy ratio of 0.490 (13):0.510 (13).