A new nickel(II) coordination complex [Ni(phen)3]·(m- nitrobenzoic acid)2-(H2O) was synthesized by self-assembly of m-nitrobenzoic acid, 1,10-phenanthroline and nickelous Perchlorate. It crystallizes in the monoclinic system, space group C2/c, with a = 2.4596(6), b = 1.2124(3), c = 1.9824(5) nm, β = 97.088(5)°, V = 5.866(3) nm 3, Dc = 1.474 g/cm3, Z = 4, Mr = 1301.82, μ(MoKα) = 0.417 mm-1 F(000) = 2688, R - 0.0493 and wR = 0.1025. Structural determination indicates that the nickel(II) ion is coordinated with six nitrogen atoms from three p...