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硝酸铁,硝酸铈,邻菲咯啉(phen)和钛铁试剂(Tiron)通过水热方法合成了一种d-f异双核配合物[Fe(phen)3]2[FeCe(tiron)3]·6H2O,tiron=C6H2O8S2。X-射线单晶衍射分析表明,晶体属立方晶系,P213空间群,晶胞参数为:a=2.19409(4)nm,V=10.5624(3)nm3,Z=4,F(000)=4648,R1=0.0451,wR2=0.1077,S=1.072。在具有C3对称性的[FeCe(tiron)3]6-单元中,Fe髥与6个酚氧配位形成一个反三棱柱配位多面体,Ce髥则与3个桥联的酚氧μ2-O和3个磺酸基的氧形成另一个与FeO6共用底面的反三棱柱配位多面体CeO6。配阳离子通过phen-phen之间的π-π相互作用和与配阴离子间的静电引力等作用组装成一种三角梅状准主/客体型的超分子。在2~300K温度范围内测试了配合物的变温磁化率,结果表明,Ce髥-Fe髥之间存在典型的反铁磁性相互作用。
A novel df heterobinuclear complex [Fe (phen) 3] 2 [FeCe (tiron) 3] · 6H2O was synthesized by hydrothermal method using ferric nitrate, ferric nitrate, cerium nitrate, phen and tiron , tiron = C6H2O8S2. X-ray single crystal diffraction analysis showed that the crystal belongs to the cubic system with P213 space group and the unit cell parameters are: a = 2.19409 (4) nm, V = 10.5624 (3) nm3, Z = 4, F , R1 = 0.0451, wR2 = 0.1077, S = 1.072. In the [FeCe (tiron) 3] 6-unit with C3 symmetry, Fe 髥 coordinates with six phenols to form an antispherical coordination polyhedron, while Ce 髥 binds with three bridged phenoxy-μ 2 -O And three sulfonate oxygen form another anti-triangular prism polyhedron CeO6 sharing the bottom with FeO6. With the role of the cation through the phen-phen π-π interaction between the electrostatic anion and anion and the role of assembly into a plum-like quasi-host / guest-type supramolecules. The temperature-dependent susceptibility of the complexes was tested in the temperature range of 2 ~ 300K. The results showed that there was a typical antiferromagnetic interaction between Ce 髥 -Fe 髥.