A slowly magnetic relaxing SmIII monomer with a D5h equatorial compressed ligand field,Inorganic Chemistry Frontiers

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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 D_5h equatorial ligand field (LF) are obtained. Ab initio CASSCF calculations suggest that the equatorial LF promotes the magnetic anisotropy of the central Sm^III and impair that of Dy^III. Alternating current (ac) susceptibility measurements reveal that the samarium complex is the first Sm^III mono-nuclear complex with slow magnetic relaxation. The isostructural Dy^III 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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