Electron-donating effect dominated 5,6-dimethoxy-2-(2,2,2-trifluoroethyl)-1-indone dysprosium SMM

Electron-donating effect dominated 5,6-dimethoxy-2-(2,2,2-trifluoroethyl)-1-indone dysprosium SMM
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给电子效应主导的5,6-二甲氧基-2-(2,2,2-三氟乙基)-1-茚酮镝SMM

DOI:
10.1016/j.ica.2017.06.019
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发表时间:
2017-09
影响因子:
2.8
通讯作者:
李光明
李光明
中科院分区:
化学3区
文献类型:
--
作者:
董艳萍;李伟佐;邹晓艳;侯广峰;李光明

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通过5,6-DTFI与LnCl3·6H2O(Ln=Dy,Tb,Ho)的反应,得到了3个5,6-dimethoxy-2-(2,2,2-trifluoroethyl)-1-indone)的β-Dy(5,6-DTFI)3(H2O)3(H2O)2·H2O2CH2Cl2(1),Tb(5,6-DTFI)3(H2O)2·H2O2CH2Cl2(2)和Ho(5,6-DTFI)3(H2O)2·H2O2CH2Cl2(3)。X-射线单晶分析表明,配合物1-3均为八配位单核结构。磁学研究表明,在0Oe下,配合物1具有单分子磁性。值得注意的是,配体在调节其磁性方面起着至关重要的作用。详细讨论了相应的结构参数和磁参数。
A series of threeβ-diketone mononuclear lanthanide complexes, namely, Dy(5,6-DTFI)3(H2O)2·H2O2CH2Cl2(1), Tb(5,6-DTFI)3(H2O)2·H2O2CH2Cl2(2) and Ho(5,6-DTFI)3(H2O)2·H2O2CH2Cl2(3) (5,6-DTFI = 5,6-dimethoxy-2-(2,2,2-trifluoroethyl)-1-indone) have been isolated by reactions of 5,6-DTFI and LnCl3·6H2O (Ln = Dy, Tb, Ho). X-ray crystallographic analysis reveals that complexes1–3are all eight-coordinated mononuclear structures. Magnetic studies indicate that complex1is of single-molecule magnetic behaviors under 0 Oe. Notably, the ligands play essential role on regulating their magnetism. The corresponding structural and magnetic parameters have been discussed in details.
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