Synthesis, crystal structure and electrochemical property of a dinuclear manganese(II) complex [Mn2(C12H8N 2)4(C8H5O4) 2](C8H4O4)·H2O

One dinuclear manganese(II) complex [Mn2(C12H 8N2)4(C8H5O 4)2](C8H4O4) ·EH2O has been synthesized with o-phthalic acid and 1,10-phenanthroline. The crystal structure was determined by X-ray diffraction. The crystal belongs to the triclinic system, space group P1 with a = 1.17767(3), b = 1.22292(2), c = 1.35860(3) nm, α = 110.5300(10), β = 97.6140(10), γ = 93.7300(10)°, V = 1.80307(7) nm3, Dc = 1.404 g/cm3, Z = 2, F(000) = 784, the final GOOF = 1.047, R = 0.0398 and wR = 0.1038. The crystal structure of the title complex consists of one [Mn2(C12H8N2)4(C 8H5O4)2]2+ cation, one uncoordinate o-phthalate anion (C8H4O4) 2- and one uncoordinate water molecule. In [Mn2(C 12H8N2)4(C8H 5O4)2]2+, the central Mn(II) ion is coordinated by four nitrogen atoms and two oxygen atoms to give a distorted octahedral coordination geometry. The electrochemical property of the title complex was also studied.