pH-Controlled Assembly of Organophosphonate-Bridged Dysprosium(III) Single-Molecule Magnets Based on Polyoxometalates

被引：36
|
作者：
Huo, Yu [1 ]
Chen, Yan-Cong [1 ]
Wu, Si-Guo [1 ]
Jia, Jian-Hua [1 ]
Chen, Wen-Bin [1 ]
Liu, Jun-Liang [1 ]
Tong, Ming-Liang [1 ]
机构：
[1] Sun Yat Sen Univ, Sch Chem, Minist Educ, Key Lab Bioinorgan & Synthet Chem, Guangzhou 510275, Guangdong, Peoples R China
来源：
INORGANIC CHEMISTRY | 2018年 / 57卷 / 12期
基金：
美国国家科学基金会;
关键词：
BOND-VALENCE PARAMETERS; CHEMICAL-PROPERTIES; DY-3; TRIANGLES; IONIC-RADII; CLUSTERS; COMPLEXES; METAL; MAGNETIZATION; TRANSITION; WHEEL;
D O I：
10.1021/acs.inorgchem.8b00795
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Two structurally intriguing dysprosium(III)-substituted polyoxometalates, [Dy-6(ampH)(4)(H2O)(23)(ampH(2))(PW11O39)(2)] (1) and [Dy-9(CO3)(3)(ampH)(2)(H2O)(12)(PW10O37)(6)](35-)(2), are assembled by the same precursor under different pH conditions. The structure of 1 contains an octahedral {Dy-6(ampH)(4)} core, and a unique windmill-type {Dy-9(CO3)(3)(ampH)(2)} for 2. Single-molecule magnet behavior is observed for 2 with a thermally activated energy barrier of 56 K and no appreciable quantum tunneling of magnetization under zero field.
引用
收藏
页码：6773 / 6777
页数：5
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