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Synthesis and single-molecule magnet properties of a trimetallic dysprosium metallocene cation
Chemical Communications ( IF 4.3 ) Pub Date : 2021-5-28 , DOI: 10.1039/d1cc02139g Mian He 1 , Fu-Sheng Guo 1 , Jinkui Tang 2 , Akseli Mansikkamäki 3 , Richard A Layfield 1
Chemical Communications ( IF 4.3 ) Pub Date : 2021-5-28 , DOI: 10.1039/d1cc02139g Mian He 1 , Fu-Sheng Guo 1 , Jinkui Tang 2 , Akseli Mansikkamäki 3 , Richard A Layfield 1
Affiliation
The dimetallic fulvalene-bridged dysprosium complex [{Dy(Cp*)(μ-BH4)}2(Fvtttt)] (1, Cp* = C5Me5) is converted into the trimetallic borohydride-bridged species [{Dy(Cp*)(Fvtttt)}2Dy(μ-BH4)3] (2). In turn, 2 is reacted with a silylium electrophile to give [{Dy(Cp*)(μ-BH4)(Fvtttt)}2Dy][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.
中文翻译:
三金属镝茂金属阳离子的合成及其单分子磁体性能
二金属富瓦烯桥联镝络合物 [{Dy(Cp*)(μ-BH 4 )} 2 (Fv tttt )] (1, Cp* = C 5 Me 5 ) 转化为三金属硼氢化物桥联物质 [{Dy (Cp*)(Fv tttt )} 2 Dy(μ-BH 4 ) 3 ] (2)。反过来,2 与硅基亲电子试剂反应,得到 [{Dy(Cp*)(μ-BH 4 )(Fv tttt )} 2 Dy][B(C 6 F 5 ) 4 ] ([3][B( C 6 F 5 ) 3 ]),第一个三金属镝阳离子。化合物[ 3 ][B(C 6 F 5 ) 3 ]也可以通过添加两当量的亲电子试剂直接由1形成。借助从头计算,观察到有效能垒从 2 增加到 3 倍,并进行了解释。
更新日期:2021-06-04
中文翻译:
三金属镝茂金属阳离子的合成及其单分子磁体性能
二金属富瓦烯桥联镝络合物 [{Dy(Cp*)(μ-BH 4 )} 2 (Fv tttt )] (1, Cp* = C 5 Me 5 ) 转化为三金属硼氢化物桥联物质 [{Dy (Cp*)(Fv tttt )} 2 Dy(μ-BH 4 ) 3 ] (2)。反过来,2 与硅基亲电子试剂反应,得到 [{Dy(Cp*)(μ-BH 4 )(Fv tttt )} 2 Dy][B(C 6 F 5 ) 4 ] ([3][B( C 6 F 5 ) 3 ]),第一个三金属镝阳离子。化合物[ 3 ][B(C 6 F 5 ) 3 ]也可以通过添加两当量的亲电子试剂直接由1形成。借助从头计算,观察到有效能垒从 2 增加到 3 倍,并进行了解释。