Synthesis, Crystal Structure, and Magnetic Properties of a New Dinuclear Iron Complex with Schiff Base Ligand

A new dinuclear iron(III) complex has been synthesized and structurally characterized by X-ray crystallography: [Fe-2(III)(L)(C6H5COO)(SO4)(CH3OH)(2)]center dot CH3CN center dot CH3OH (1, H3L = N,N-bis(salicylidene)-1,3-diamino-2-propanol). Complex 1 belongs to orthorhombic space group Pna2(1) with a = 11.4400(8), b = 22.9705(2), c = 12.5712(9) angstrom, V = 3303.5(4) angstrom(3), Z = 4, F(000) = 1576, D-c = 1.531 g.cm(-3), M-r = 761.36, mu = 1.007 mm(-1), S = 1.014, the final R = 0.0505 and wR = 0.1018. The crystal packing is stabilized by intermolecular O-H center dot center dot center dot O hydrogen bonds, forming an extended one-dimensional chain structure. The temperature dependence of magnetic susceptibility measurement shows that antiferromagnetic interaction is propagated between the metal centers. Fit as dinuclear arrangement gave parameters of J = 19.7 cm(-1), g = 1.89 and R-2 = 0.9999.