Air-stable chiral mono- and dinuclear dysprosium single-molecule magnets: steric hindrance of hexaazamacrocycles

被引：34
|
作者：
Zhao, Chen [1 ,2 ]
Zhu, Zhenhua [1 ,3 ]
Li, Xiao-Lei [1 ]
Tang, Jinkui [1 ,2 ]
机构：
[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat, Changchun 130022, Peoples R China
[2] Univ Sci & Technol China, Sch Appl Chem & Engn, Hefei 230026, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
INORGANIC CHEMISTRY FRONTIERS | 2022年 / 9卷 / 16期
基金：
中国国家自然科学基金;
关键词：
MAGNETIZATION REVERSAL; ION-ANISOTROPY; DYNAMICS; BARRIER;
D O I：
10.1039/d2qi00754a
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Mononuclear [Dy(L-R/S(1))(4-Me-PhO)(2)](BPh4) (1R/1S) and dinuclear [Dy-2(L-R/S(2))(2)(4-Me-PhO)(2)(OH)(2)](BPh4)(2) (2R/2S) chiral dysprosium(iii) complexes were synthesized using equatorial hexaazamacrocycle and p-cresol axial ligands. Structural and magnetic analyses revealed that 1R/1S are high-performance single-molecule magnets due to their nearly perfect D-6h local symmetry. Hydroxo-bridged dinuclear species 2R/2S with nine-coordinate hula-hoop geometry possess strong intramolecular ferromagnetic interactions as proven by the electrostatic model, suppressing quantum tunnelling of magnetization (QTM) to some extent.
引用
收藏
页码：4049 / 4055
页数：7
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