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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
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.
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页码:6773 / 6777
页数:5
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