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

页码：4049 / 4055

页数：7