catena-Poly[[[aquamanganese(III)]-μ-(E)-5-bromo-N-[2-(5-bromo-2-oxidobenzylideneamino)-4-nitrophenyl]-2-oxidobenzamidato] N,N-dimethylfomamide monosolvate]

The asymmetric unit of the title complex, {[Mn(C 20 H 10 Br 2 N 3 O 5 )(H 2 O)]·(CH 3 ) 2 NCHO} n , consists of one Mn III ion, one ( E )-5-bromo- N -[2-(5-bromo-2-oxidobenzylideneamino)-4-nitrophenyl]-2-oxidobenzamidate ligand (Schiff base), one water molecule and an N , N -dimethylformamide molecule. The coordination geometry around the Mn III ion is a distorted octahedron, being surrounded by two O and two N atoms from the Schiff base, which are positioned in the equatorial plane. The water molecule and the O atom of the carbonyl group from the adjacent Mn III complex are situated at the axial positions, leading to a polymeric chain along the c axis. In the crystal, the complex and N , N -dimethylformamide molecules are connected via O—H...O, C—H...O and C—H...Br hydrogen bonds, forming a three-dimensional network.

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