SYNTHESIS AND STRUCTURAL CHARACTERIZATION OF A METHOXIDE-BRIDGED BINUCLEAR MANGANESE(III) COMPLEX WITH BIS(2-OXYPHENYL)DISULFIDE (MP-MP2) MN2 (MU-OCH3)2(MP-MP)2(DMSO)2

The title complex Mn2(mu-OCH3)2(MP-MP)2(DMSO)2, 1, (MP-MP2- = bis(2-ox yphenvl)disulfide) was obtained by the reaction of Mn(CH3CO2)24H2O, H2 MP (o-mercaptophenol) and NaOMe in the mixed solvent DMSO/CH3OH. The s tructure of 1 was determined by X-rav diffraction methods. Crystal dat a: C30H34Mn2O8S6, triclinic, P1BAR, a = 8.410(1), b = 8.738(1), c = 12 .588 (2)angstrom, a = 82.85(1), beta = 85.78(1), y = 72.38 (1)-degrees , V = 874.1 angstrom3, Z = 1, M(r) = 824.86, d(x) = 1.57 g/cm3, F(000) = 424, mu (Mo Kalpha) = 10.8 cm-1, R(R(w)) = 0.057(0.061). The molecu le consists of two monomers, Mn(OCH3)(MP-MP)(DMSO), bridged by the met hoxide groups. Each Mp-Mp2- ligand provides two phenolate oxygen atoms and one disulfide sulfur atom to the manganese(III) ion in the Mn2(mu -OMe)2 unit. The effective magnetic moment is mu(eff) = 4.24 mu(B) per Mn(III) ion at room temperature.