Crystal Structure Of Trans-DiAquaBis(Nicotinamide-Κn 1)Bis(4-NitroBenzoato-Κo)Manganese(II)
Aşkın, Gülçin Şefiye
Tonbul, A. M.
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In the title centrosymmetric MnII complex, the MnII atom is coordinated by two 4-nitrobenzoate (NB) anions, two nicotinamide (NA) ligands and two water molecules; the NB and NA ligands act as monodentate ligands. The resulting MnN2O4 coordination polyhedron is a distorted octahedron., The asymmetric unit of the title compound, [Mn(C7H4NO4)2(C6H6N2O)2(H2O)2], contains one MnII atom, one 4-nitrobenzoate (NB) anion, one nicotinamide (NA) ligand and one water molecule; NA and NB each act as a monodentate ligand. The MnII atom, lying on an inversion centre, is coordinated by four O atoms and two pyridine N atoms in a distorted octahedral geometry. The water molecules are hydrogen bonded to the carboxylate O atoms. The dihedral angle between the carboxylate group and the adjacent benzene ring is 24.4 (3)°, while the benzene and pyridine rings are oriented at a dihedral angle of 86.63 (11)°. In the crystal, O—H⋯O and N—H⋯O hydrogen bonds link the molecules, forming a layer parallel to the ab plane. The layers are further linked via weak C—H⋯O hydrogen bonds, a π–π stacking interaction [centroid–centroid distance = 3.868 (2) Å] and a weak C—H⋯π interaction, resulting in a three-dimensional network.