六氟磷铵阴离子对类salen 3d-4f异核金属配合物结构的影响及其磁性研究(英文)

Anion PF_6 dependent construction of salen-type heteronuclear 3d-4f complexes with magnetic properties

利用邻香兰素缩1,3-丙二胺为配体合成了两类salen 3d-4f异核金属配合物。它们分别是双核配合物[Dy(CuL)Cl2(H2O)2(MeOH)]·MeOH·Cl(1)和三核螺旋桨结构配合物[Dy(CuL)2Cl(MeOH)2]·PF6·CH2Cl2(2)。配合物2中六氟磷铵阴离子作为结构调节剂不仅可以平衡电荷,而且可以调节结构,使配合物呈现新颖的双刃螺旋桨结构。此外对配合物1和2的分子磁性研究表明,二者都体现铁磁性相互作用。

Two type of heteronuclear 3d-4f complexes obtained by salen-type ligand N,N^1-bis（2-hydroxy-3-methoxy benzylidene）-i ,3-diaminopropane （H2L） have been isolated and their single crystal structures were characterized. They are dinuclear complex [ Dy（CuL） Cl2 （ H2O） 2 （MeOH） ].MeOH.Cl （ 1 ） and trinuelear propeller-like [ Dy （CuL） 2 C1 （MeOH） 2 ] ＂ PF6 ＂ CH2 C12 （2）. The complex 2, with the counteranion PF6 which is not only a role to neutralize overall charge in the solid but also to regulate frameworks, exhibits novel two-blade propeller-like structure. The variabletemperature magnetic properties of complexes 1 and 2 have been investigated over the temperature range 2 - 300 K at 1 000 Oe. Both complexes exhibit ferromagnetic interactions between spin carriers.