A cyanometallate- and carbonate-bridged dysprosium chain complex with a pentadentate macrocyclic ligand: synthesis, structure, and magnetism†
Abstract
A novel one-dimensional (1D) polymeric cyanometallate- and carbonate-bridged dysprosium(III) chain with the formula [Dy2(LN5)2{Fe(CN)6}(CO3)(OH)] (1), where LN5 is 2,14-dimethyl-3,6,10,13,19-pentaazabicyclo[13.3.1]nonadeca-1(19),2,13,15,17-pentaene, was synthesized, providing the first example of a 3d–4f chain complex based on the combination of cyanometallate- and carbonate-bridged ligands. Single-crystal X-ray diffraction analysis shows that the Dy(III) ion is eight-coordinated with the N6O2 donor set originating from a pentadentate macrocyclic ligand LN5, one [Fe(CN)6]3−, one CO32− and OH−. The CO32− group bridges two Dy(III) ions to form a dinuclear structural unit [Dy2(LN5)2(CO3)(OH)], which is further linked by [Fe(CN)6]3− ligands to construct an infinite chain. Magnetic studies reveal that the chain complex exhibits two field-induced slow relaxation processes, with the estimated energy barriers Ueff = 40.2 and 9.8 K, respectively. This work provides a special strategy for the construction of novel single-molecular magnets and single-chain magnets.
Please wait while we load your content...
