Chiral mononuclear lanthanide complexes and the field-induced single-ion magnet behaviour of a Dy analogue

被引：53
|
作者：
Lin, Shuang-Yan [1 ,2 ]
Wang, Chao [1 ]
Zhao, Lang [1 ]
Wu, Jianfeng [1 ]
Tang, Jinkui [1 ]
机构：
[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat, Changchun 130022, Peoples R China
[2] Harbin Normal Univ, Sch Phys & Elect Engn, Minist Educ, Key Lab Photon & Elect Bandgap Mat, Harbin 150025, Peoples R China
来源：
DALTON TRANSACTIONS | 2015年 / 44卷 / 01期
基金：
中国国家自然科学基金;
关键词：
MOLECULE-MAGNET; FERROELECTRIC PROPERTIES; LOW-SYMMETRY; RELAXATION; LIGAND; SPIN; ANISOTROPY; (1R,2R)-1,2-DIAMINOCYCLOHEXANE; 2,6-DIFORMYL-4-METHYLPHENOL; MAGNETIZATION;
D O I：
10.1039/c4dt02889a
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Three pairs of homochiral mononuclear lanthanide complexes, with the general formula [LnH(4)L(RRRRRR/SSSSSS)(SCN)(2)](SCN)(2)center dot xCH(3)OH center dot yH(2)O(Ln = Dy (R/S-Dy-1), Ho (R/S-Ho-1) and Er (R/S-Er-1)), have been obtained via self-assembly between chiral macrocyclic ligands and the respective thiocyanates, all of which show a saddle-type conformation with seven-coordinated metal ions. Magnetic measurements revealed that the Dy complex shows field-induced single-ion magnet behaviour, which is rarely reported in a seven-coordinated lanthanide-based SIM encapsulated in a macrocyclic ligand. The absolute configuration of all enantiomers was determined by single crystal X-ray crystallography and confirmed by electronic CD and VCD spectra.
引用
收藏
页码：223 / 229
页数：7
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