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合成了锰(Ⅱ)与间苯二甲酸根离子(IPHTA)和4,4’-二甲基-2,2’-联吡啶(Me2bpy)、5-硝基-1,10-邻菲罗啉(NO2-phen)的双核配合物:[Mn2(IPHTA)(Me2bpy)4](ClO4)2(1)和[Mn2(IPHTA)(NO2-phen)4](ClO4)2(2).通过元素分析、红外光谱、电子光谱、电导、磁性测量推定配合物具有间苯二甲酸根桥联结构,Mn(Ⅱ)离子处于六配位的八面体环境.测定了配合物(1)的变温磁化率(4~300K),其数值与自旋哈密顿算符H=-2JS1·S2导出的磁方程拟合,求得交换积分J为-8.62cm-1,表明双核配合物中金属离子间存在弱的反铁磁性超交换作用.
Synthesis of manganese (Ⅱ) with isophthalic acid ion (IPHTA) and 4,4’-dimethyl-2,2’-bipyridine (Me2bpy), 5-nitro-1,10- phenanthroline (NO2-phen) binuclear complexes: [Mn2 (IPHTA) (Me2bpy) 4] (ClO4) 2 (1) and [Mn2 (IPHTA) (NO2-phen) 4] (ClO4) 2 (2). The complexes were characterized by isophthalic acid bridged structure and Mn (Ⅱ) ions in the hexacoordinated octahedral environment by elemental analysis, IR, electron spectroscopy, conductivity and magnetic measurements. The temperature-dependent magnetic susceptibility (4 ~ 300K) of the complex (1) was determined and fitted to the magnetic equation derived from the spin Hamiltonian H = -2JS1 · S2. The exchange integral J was found to be -8.62cm- 1, indicating that there is a weak antiferromagnetic super-exchange between the metal ions in the binuclear complex.