A thioether-decorated {Mn11Tb4} coordination cluster with slow magnetic relaxation

作者：Schmitz Sebastian^*; van Leusen Jan; Ellern Arkady; Koegerler Paul; Monakhov Kirill Yu

来源：Inorganic Chemistry Frontiers, 2015, 2(12): 1095-1100.

DOI：10.1039/c5qi00172b

The oxidation reaction of manganese(II) acetate tetrahydrate with terbium(III) nitrate hexahydrate in acetonitrile in the presence of 4-(methylthio) benzoic acid (Hbza.SMe) afforded a polynuclear [(Mn11Tb4O9)-Tb-III-O-III(OH)(5)(bza.SMe)(18)(NO3)(2)(H2O)(6)(OMe)(2)] complex (1) with a {Mn5Tb2O6}-bridged double-{TbMn3O4}-cubane structure. This antiferromagnetically coupled, neutral molecule is decorated in the periphery with structurally exposed thioether groups which can be used as anchors to metallic surfaces. Compound 1 is potentially a single-molecule magnet (SMM), exhibiting slow relaxation of the magnetisation up to 3 K. While 1 is not thermally stable, the coordination cluster remains stable in various Lewis base-type organic solvents like THF and acetone.

• 出版日期2015