Crystal structure of bis-(μ-4-nitro-benzoato-κ:')bis-[bis-(4-methyl-pyridine-κ)(4-nitro-benzoato-κ,')manganese(II)].

The title compound, [Mn(CHNO)(CHN)] or [Mn(μ-NBz)(κ-NBz)(4-Mepy)], where NBz is 4-nitro-benzoate and 4-Mepy is 4-methyl-pyridine, is a centrosymmetric dinuclear complex in which the Mn atoms are bridged by two NBz ligands with Mn⋯Mn = 4.1324 (4) Å. The Mn atom in this dimeric species is present in a distorted octa-hedral environment with the four coordinating O atoms forming the equatorial plane and the two pyridyl N atoms occupying the axial sites. An important structural feature of the dimeric complex is that each of the bridging carboxyl-ate ligands binds to the metal ions in an asymmetric fashion involving bent and linear Mn-O-C units. The crystal packing is consolidated by C-H⋯O and C-H⋯π interactions.