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本文合成了以邻苯二甲酸二价阴离子为桥基的3个新型的环上含4个锰(Ⅱ)离子的十六元大环配合物。化合物的组成用元素分析确定,并用IR、磁天平等手段对配合物进行了表征,测定了[Mn_4(μ-Phth)_2(bpy)_8](ClO_4)_4·3H_2O的晶体结构,空间群,a=14.276(6),b=14.369(9),c=15.54(1),α=70.22(5)°,β=61.73(6)°,γ=66.38(5)°,Z=1.对[Mn_4(μ-Phth)_2(bpy)_8](ClO_4)_4·3H_2O和[Mn_4(μ-Phth)_2(Phen)_8](ClO_4)_4·2H_2O进行了变温磁化率测量(4—300K),用最小二乘法可使其实验值与从自旋Hamilton算符,导出的磁化率理论曲线很好拟合,求得J=0.53cm~(-1)(bpy)和J=0.23cm~(-1)(Phen)。表明Mn—Mn间有弱的铁磁性交换作用。
In this paper, three novel 16-membered macrocyclic complexes containing 4 manganese (Ⅱ) ions on the ring were synthesized using di-anions of phthalic acid as a bridge. The composition of the compounds was determined by elemental analysis. The complexes were characterized by means of IR and magnetic balance, and the crystal structure, space group, and structure of [Mn_4 (μ-Phth) _2 (bpy) _8] (ClO_4) _4 · 3H_2O were determined. a = 14.276 (6), b = 14.369 (9), c = 15.54 (1), α = 70.22 (5) °, β = 61.73 (6) °, γ = 66.38 (5) °, Z = The temperature-dependent magnetic susceptibility measurements (4-300K) were performed for [Mn_4 (μ-Phth) _2 (bpy) _8] (ClO_4) _4 · 3H_2O and [Mn_4 (μ-Phth) _2 (Phen) _8] (ClO_4) _4 · 2H_2O. , The least squares method can be used to fit the experimental results to the theoretical curve of magnetic susceptibility derived from the spin Hamiltonian operator, -1) (Phen). It shows that there is weak ferromagnetic exchange between Mn and Mn.