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A slowly magnetic relaxing SmIII monomer with a D5h equatorial compressed ligand field
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2020-04-27 , DOI: 10.1039/d0qi00326c
Yong-Ze Pan 1, 2, 3, 4, 5 , Qiu-Yan Hua 1, 2, 3, 4, 5 , Li-Shan Lin 1, 2, 3, 4, 5 , Yi-Bo Qiu 1, 2, 3, 4, 5 , Jun-Liang Liu 5, 6, 7, 8, 9 , Ai-Ju Zhou 1, 2, 3, 4, 5 , Wei-Quan Lin 1, 2, 3, 4, 5 , Ji-Dong Leng 1, 2, 3, 4, 5
Affiliation  

By using a bi-dentate phosphine oxide ligand L (L = bis(diphenylphosphino)methane dioxide), two mono-nuclear lanthanide complexes [LnL2(DMF)Cl2]Cl (Ln = Sm, 1; Dy, 2) with a D5h equatorial ligand field (LF) are obtained. Ab initio CASSCF calculations suggest that the equatorial LF promotes the magnetic anisotropy of the central SmIII and impair that of DyIII. Alternating current (ac) susceptibility measurements reveal that the samarium complex is the first SmIII mono-nuclear complex with slow magnetic relaxation. The isostructural DyIII compound, in contrast, relaxes much faster. Further magnetic property studies were then performed to probe the origin of magnetic anisotropy and magnetic relaxations.

中文翻译:

具有D5h赤道压缩配体场的慢磁弛豫SmIII单体

通过使用双齿氧化膦配体L(L =双(二苯基膦基)甲烷二氧化物),两个单核镧系元素络合物[LnL 2(DMF)Cl 2 ] Cl(Ln = Sm,1 ; Dy,2)与获得D 5h赤道配体场(LF)。从头算CASSCF计算表明,赤道低频会促进中央Sm III的磁各向异性而削弱Dy III的磁各向异性。交流(ac)磁化率测量表明reveal络合物是第一个具有缓慢磁弛豫的Sm III单核络合物。同构Dy III相比之下,复合材料放松得更快。然后进行了进一步的磁性能研究,以探究磁各向异性和磁弛豫的起源。
更新日期:2020-04-27
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