在3d-4f单分子磁体(SMMs)中,铁通常以两种氧化态存在:FeII和FeIII。在八面体场中,低自旋FeII缺乏不成对电子,使其具有抗磁性,而高自旋FeII具有四个不成对电子,表现出顺磁性。另一方面,FeIII在配位环境中普遍表现出高自旋行为,比FeII更稳...在3d-4f单分子磁体(SMMs)中,铁通常以两种氧化态存在:FeII和FeIII。在八面体场中,低自旋FeII缺乏不成对电子,使其具有抗磁性,而高自旋FeII具有四个不成对电子,表现出顺磁性。另一方面,FeIII在配位环境中普遍表现出高自旋行为,比FeII更稳定,可以利用这些特性可以合成许多高性能的Fe-Ln SMMs。因此,本文通过对近年来典型的铁–稀土SMMs进行综述,以期为3d-4f SMMs的发展奠定一定的基础。In 3d-4f single molecule magnets (SMMs), iron is usually present in two oxidation states: FeII and FeIII. In the octahedral field, low spin FeII lacks unpaired electrons, making it diamagnetic, while high spin FeII has four unpaired electrons, showing paramagnetism. Moreover, FeIII generally exhibits high spin behavior in the coordination environment and is more stable than FeII, which can be used to synthesize many high-performance iron-lanthanide (Fe-Ln) SMMs. Therefore, this paper reviews the typical Fe-Ln SMMs in recent years, in order to lay a certain foundation for the development of 3d-4f SMMs.展开更多
文摘在3d-4f单分子磁体(SMMs)中,铁通常以两种氧化态存在:FeII和FeIII。在八面体场中,低自旋FeII缺乏不成对电子,使其具有抗磁性,而高自旋FeII具有四个不成对电子,表现出顺磁性。另一方面,FeIII在配位环境中普遍表现出高自旋行为,比FeII更稳定,可以利用这些特性可以合成许多高性能的Fe-Ln SMMs。因此,本文通过对近年来典型的铁–稀土SMMs进行综述,以期为3d-4f SMMs的发展奠定一定的基础。In 3d-4f single molecule magnets (SMMs), iron is usually present in two oxidation states: FeII and FeIII. In the octahedral field, low spin FeII lacks unpaired electrons, making it diamagnetic, while high spin FeII has four unpaired electrons, showing paramagnetism. Moreover, FeIII generally exhibits high spin behavior in the coordination environment and is more stable than FeII, which can be used to synthesize many high-performance iron-lanthanide (Fe-Ln) SMMs. Therefore, this paper reviews the typical Fe-Ln SMMs in recent years, in order to lay a certain foundation for the development of 3d-4f SMMs.
