平面{Dy4}簇中阴离子扰动的磁慢弛豫
Anion-perturbed magnetic slow relaxation in planar {Dy4} clusters.
作者信息
Zheng Yan-Zhen, Lan Yanhua, Anson Christopher E, Powell Annie K
机构信息
Institut fur Anorganische Chemie, Universitat Karlsruhe (TH), Engesserstrasse Geb. 30.45, 76128 Karlsruhe, Germany.
出版信息
Inorg Chem. 2008 Dec 1;47(23):10813-5. doi: 10.1021/ic8016722.
Two planar tetranuclear dysprosium(III) complexes, [Dy(4)(mu(3)-OH)(2)(hmmpH)(2)(hmmp)(2)(Cl)(4)].3MeCN.MeOH (1) and [Dy(4)(mu(3)-OH)(2)(hmmpH)(2)(hmmp)(2)(N(3))(4)].4MeOH (2) {hmmpH(2) = 2-[(2-hydroxyethylimino)methyl]-6-methoxyphenol}, which exhibit an anion-dependent magnetic slow relaxation behavior, have been synthesized by in situ condensation of o-vanillin and 2-aminoethanol. The higher energy barrier observed in 2 could be the result of a more favorable crystal field and/or orientations of single-ion easy axes of magnetization of the Dy(III) ions.
通过邻香草醛和2-氨基乙醇的原位缩合反应，合成了两种平面四核镝(III)配合物，[Dy(4)(μ(3)-OH)(2)(hmmpH)(2)(hmmp)(2)(Cl)(4)].3MeCN.MeOH (1) 和 [Dy(4)(μ(3)-OH)(2)(hmmpH)(2)(hmmp)(2)(N(3))(4)].4MeOH (2) {hmmpH(2) = 2-[(2-羟乙基亚氨基)甲基]-6-甲氧基苯酚}，它们表现出阴离子依赖性磁慢弛豫行为。在2中观察到的较高能垒可能是由于更有利的晶体场和/或Dy(III)离子单离子易磁化轴的取向。
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