First heterometallic Ga-III-Dy-III single-molecule magnets: implication of Ga-III in extracting Fe-Dy interaction

Chen Sihuai; Mereacre Valeriu; Anson Christopher E.; Powell Annie K.

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First heterometallic Ga-III-Dy-III single-molecule magnets: implication of Ga-III in extracting Fe-Dy interaction

机译：第一个杂金属Ga-III-Dy-III单分子磁体：Ga-III在提取Fe-Dy相互作用中的意义

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The compounds of the system [M4M2'(mu(3)-OH)(2)(nbdea)(4)(C6H5CO2)(8)]center dot MeCN, where M = Ga-III, M' = Dy-III (2), M = Fe-III, M' = Y-III (3) are isostructural to the known [Fe4Dy2] compound (1). Those of the system [M4M4'(mu(3)-OH)(4)(nbdea)(4)(m-CH3C6H4CO2)(12)]center dot nMeCN, where M = Ga-III, M' = Dy-III, n = 4 (5), M = Fe-III, M' = Y-III, n = 1 (6) are isostructural to the [Fe4Dy4] compound (4). This allows for comparisons between single ion effects of the paramagnetic ions. The structures were determined using single crystal analysis. Magnetic susceptibility measurements reveal that the Ga-III-Dy-III compounds 2 and 5 are SMMs. The energy barrier for 2 is close to that for the known isostructural Fe4Dy2 compound (1), but with a significantly increased relaxation time.

机译：系统[M4M2'（mu（3）-OH）（2）（nbdea）（4）（C6H5CO2）（8）]的中心点MeCN，其中M = Ga-III，M'= Dy-III（ 2），M ＝ Fe-III，M′＝ Y-III（3）与已知的[Fe4Dy2]化合物（1）同构。系统[M4M4'（mu（3）-OH）（4）（nbdea）（4）（m-CH3C6H4CO2）（12）]的中心点nMeCN，其中M = Ga-III，M'= Dy-III ，n ＝ 4（5），M ＝ Fe-III，M′＝ Y-III，n ＝ 1（6）与[Fe4Dy4]化合物（4）同构。这允许在顺磁性离子的单离子效应之间进行比较。使用单晶分析确定结构。磁化率测量表明，Ga-III-Dy-III化合物2和5是SMM。 2的能垒接近于已知的等结构Fe4Dy2化合物（1），但弛豫时间明显增加。

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《Dalton transactions: An international journal of inorganic chemistry》 |2016年第22期|共9页
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Chen Sihuai; Mereacre Valeriu; Anson Christopher E.; Powell Annie K.;
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First heterometallic Ga-III-Dy-III single-molecule magnets: implication of Ga-III in extracting Fe-Dy interaction

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