Structure-Property Studies of a New {FeIII2MnII} Complex

Structure-Property Studies of a New {FeIII2MnII} Complex
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DOI:
10.1016/j.poly.2021.115324
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发表时间:
2021-06
期刊:
影响因子:
2.6
通讯作者:
N. Rath;S. Holmes
N. Rath;S. Holmes
中科院分区:
化学3区
文献类型:
--
作者:
N. Rath;S. Holmes

文献摘要

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描述了三核配合物 {[(Tp*)FeIII(CN)3]2[MnII(phen)2]} (1) 的制备、结构和磁性。该三核络合物是通过处理[NEt4][(Tp*)FeIII(CN)3]·H2O [Tp* = 三(3,5-二甲基吡唑基)硼酸盐]、三氟甲磺酸锰(II)和两当量的1,10-菲咯啉的二甲基甲酰胺/乙醚混合物获得。磁性数据分析表明,1 含有比例为 2:1 的低自旋 FeIIILS(S= 1/2) 和高自旋 MnIIHS(S=5/2) 离子,这些离子在 FeIIILS(μ-CN)MnIIHS 单元内进行氰化物介导的反铁磁交换。总体而言,该配合物发现 S=3/2 磁性基态,其中 Jiso= -6.9(1) cm−1 且 giso= 2.11(1)。
The preparation, structure, and magnetic properties of a trinuclear complex, {[(Tp*)FeIII(CN)3]2[MnII(phen)2]} (1), are described. The trinuclear complex is obtained via treatment of dimethylformamide/diethyl ether mixtures of [NEt4][(Tp*)FeIII(CN)3]∙H2O [Tp* = tris(3,5-dimethylpyrazolyl)borate], manganese(II) trifluoromethanesulfonate, and two equivalents of 1,10-phenanthroline. Analysis of the magnetic data suggests that1contains a 2:1 ratio of low spin FeIIILS(S= ½) and high spin MnIIHS(S=5/2) ions that undergo cyanide-mediated antiferromagnetic exchange within the FeIIILS(μ-CN)MnIIHSunits. Overall, anS=3/2magnetic ground state is found for the complex, withJiso= -6.9(1) cm−1andgiso= 2.11(1).