A novel complex Mn 3(2,2′-bipy) 2(3,5-DMBA) 6 with 3,5-dimethylbenzoic acid (3,5-DMBA) and 2,2′-bipyridine (2,2′-bipy) has been synthesized by means of a solvent method. It crystallizes in the monoclinic space group C2/c with a = 3.1118(6), b = 1.1754(2), c = 2.0887(4) nm, β = 118.50(3), V = 6.714(2) nm 3, D c = 1.384 g/cm 3, Z = 8, F(000) = 2912, the final GOOF = 1.078, R = 0.0691 and wR = 0.1455. The crystal structure shows that the three coordinated manganese(II) ions lie in a line with the middle one as the symmetric center. The distanc...