论文部分内容阅读
合成和表征了2个标题配合物,并测定了铜(Ⅱ)配合物的晶体结构,该晶体为P1空间群,a=1.1974(2),b=1.2758(8),c=1.2871(4)nm,α=76.38(3),β=79.58(3),γ=88.99(4)°,Z=1.分子有一个对称中心,处于对称中心上的铜离子有一个延伸八面体的配位环境,而其两侧的铜离子具有四方锥的配位环境.Cu(Ⅱ)—Cu(Ⅱ)间由氮氧自由基桥联,铜离子间相距为0.7789nm.测定了两配合物的变温磁化率(4～300K),表明在三核铜配合物中Cu(Ⅱ)离子和自由基间存在强的反铁磁自旋交换作用,而在三核钴配合物中Co(Ⅱ)离子与自由基间存在铁磁性自旋交换作用.
Two title complexes were synthesized and characterized. The crystal structure of Cu (Ⅱ) complexes was determined. The crystal structure of P1 was space group a, 1.1974 (2), b = 1.2758 nm, α = 76.38 (3), β = 79.58 (3), γ = 88.99 (4) °, Z = 1. The molecule has a symmetric center and the copper ion at the center of symmetry has an extended octahedral coordination environment , While the copper ions on both sides of the Cu (Ⅱ) -Cu (Ⅱ) bridged by nitrogen and oxygen free radicals, the distance between the copper ions was 0.7789nm.The temperature dependence of the two complexes (4 ~ 300K), indicating that there is a strong antiferromagnetic spin exchange between Cu (Ⅱ) ions and free radicals in the trinuclear copper complex, whereas in the trinuclear cobalt complex, Co (Ⅱ) There is a ferromagnetic spin exchange between the base.