A Pair of Manganese(III) Schiff-Base Enantiomers: Synthesis, Crystal Structure and Magnetic Characterization

作者：Zhang Hongyan; Xue Chongchong; Zhang Daopeng^*

来源：Iranian Journal of Chemistry and Chemical Engineering (International English Edition), 2016, 35(3): 27-33.

• Manganese(III) Schiff-base
• Enantiomer
• Crystal structure
• Magnetic property

Based-on the quasi-planar tetra-dentate Schiff-base ligand, a pair of manganese(III) Schiff-base enantiomers formulated as {[Mn(R, R-3-MeOSalcy)(H2O)(CH3OH)] ClO4}(2) (1) and {[Mn(S,S-3-MeOSalcy)(H2O)(CH3OH)] ClO4}(2) (2) (3-MeOSalcy = N, N'-(1,2-cyclohexanediylethylene) bis(3-methoxysalicylideneiminato)dianion) have been synthesized and characterized by element analysis. Single X-ray structure analysis showed that the coordination sphere of the Mn(III) ion is an elongated octahedron with the four equatorial positions occupied by N2O2 unit from the Schiff-base ligand and two O atoms of the coordinated solvent molecules completing the additional two axial sites. The mononuclear manganese(III) Schiff-base compounds are self-complementary into a supramolecular dimer structure through the coordinated solvent ligand from one complex and the free O-4 compartment from the neighboring complex. Investigation of the magnetic susceptibility of the manganese complexes reveals the overall weak antiferromagnetic interactions between the adjacent mental centers.

• 出版日期2016
• 单位山东理工大学