Synthesis and single-molecule magnet properties of a trimetallic dysprosium metallocene cation

被引：13
|
作者：
He, Mian [1 ]
Guo, Fu-Sheng [1 ]
Tang, Jinkui [2 ]
Mansikkamaki, Akseli [3 ]
Layfield, Richard A. [1 ]
机构：
[1] Univ Sussex, Sch Life Sci, Dept Chem, Brighton BN1 9QR, E Sussex, England
[2] Chinese Acad Sci, Changchun Inst Appl Chem, Renmin St 5626, Changchun 130022, Peoples R China
[3] Univ Oulu, NMR Res Unit, POB 8000, FI-90014 Oulu, Finland
来源：
CHEMICAL COMMUNICATIONS | 2021年 / 57卷 / 52期
基金：
中国国家自然科学基金; 芬兰科学院; 英国工程与自然科学研究理事会;
关键词：
ANISOTROPY; TRIANGLES;
D O I：
10.1039/d1cc02139g
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The dimetallic fulvalene-bridged dysprosium complex [{Dy(Cp*)(mu-BH4)}(2)(Fv(tttt))] (1, Cp* = C5Me5) is converted into the trimetallic borohydride-bridged species [{Dy(Cp*)(Fv(tttt))}(2)Dy(mu-BH4)(3)] (2). In turn, 2 is reacted with a silylium electrophile to give [{Dy(Cp*)(mu-BH4)(Fv(tttt))}(2)Dy][B(C6F5)(4)] ([3][B(C6F5)(3)]), the first trimetallic dysprosocenium cation. Compound [3][B(C6F5)(3)] can also be formed directly from 1 by adding two equivalents of the electrophile. A three-fold enhancement in the effective energy barrier from 2 to 3 is observed and interpreted with the aid of ab initio calculations.
引用
收藏
页码：6396 / 6399
页数：4
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