Dr. Hasan Gurbuz Vocat Sch., Dept. Property Protect & Safety, Isparta, Turkey E-mail: ahmetkarahan@sdu.edu.tr 4Department of Physics, Faculty of Science, Mugla Stk Koзman University, Mugla, Turkey Received November, 30, 2015 2Akdeniz University, Alanya Engineering Faculty, Materials Science and Engineering, Alanya, Antalya, Turkey 3Department of Physics, Faculty of Science and Art, Balikesir University, Balkesir, Turkey E-mail: yahsi@balikesir.edu.tr . 770 – 775 The -oxo-bridged Fe(III) dimer complex [{Fe(4-MeOL1)}2(-O)]HOCH3, (H2-4-MeOL1 = = N,N-bis(4-methoxy-2-hydroxybenzylidene)-2,2-dimethylpropane-1,3-diamine), 1 is synthesized and characterized by single crystal X-ray diffraction. <...> Complex 1 contains a [{Fe(4MeOL1)}2(-O)] dimeric unit with a methanol solvent molecule of crystallization. <...> Each Fe(III) ion has a distorted square-pyramidal coordination geometry. <...> In the basal plane, the Fe(III) atom is coordinated by two N and two O atoms of the Schiff base ligand. <...> There are intermolecular C—H O and C—H interactions among the dinuclear complexes. <...> Among them, the synthesis and characterization of -oxo-bridged diiron(III) complexes have been extensively studied [ 8—11]. <...> The -oxo-bridged diiron(III) complexes have played an important role in the development of coordination chemistry due to the structural, electronic, magnetic, and spectroscopic properties [ 19—25 ]. <...> Our research group has recently reported the structural and magnetic characterization of mononuclear and phenoxo-bridged binuclear iron(III) complexes containing tetradentate Schiff base ligands with an O, N, N, O, donor set [24—26 ]. <...> In view of the importance of Fe(III) complexes and our interest in the characterization of transition metal complexes containing Schiff base ligands, we report here the synthesis and single crystal X-ray structure of a -oxo-bridged dinuclear iron(III) complex © Karahan A., Kurtaran R., Yahsi Y., Gungor E., Kara H., 2016 . 2016. . 57, 4 771 [{Fe(4-MeOL1)}2(-O)]HOCH3 (H2-4-MeOL1 = N,N-bis(4-methoxy-2-hydroxybenzylidene)-2,2dimethylpropane-1,3-diamine). <...> Several weeks of standing led to the growth of red crystals of 1 suitable for the X-ray analysis. <...> Synthetic route of the Schiff <...>