Structure and magnetic properties of 3d-4f heterometallic complexes containing di-2-pyridyl ketoximate: An approach to single-molecule magnets

被引：77

作者：

Mori, F

Ishida, T

Nogami, T

机构：

[1] Univ Electrocommun, Dept Appl Phys & Chem, Chofu, Tokyo 1828585, Japan

[2] Univ Electrocommun, Course Coherant Opt Sci, Chofu, Tokyo 1828585, Japan

来源：

POLYHEDRON | 2005年 / 24卷 / 16-17期

关键词：

lanthanoid; lanthanide; rare earth metal; magnetic measurements;

D O I：

10.1016/j.poly.2005.03.154

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

[{Ln(hfac)(3)}(2){Ni(dpk)(2)(phen)}] (1Ln) and [{Ln(hfac)(3)}(2){Ni(dpk)(2)(py)(2)}] (2Ln) were synthesized and characterized, where dpk = di-2-pyridyl ketoxmate and Ln = La, Tb, Dy, Ho, Er. The N-0 groups from dpk bridged the central nickel(11) ion and terminal lanthanicle(111) ions, giving a linear trinuclear array. Dc magnetic susceptibility measurements revealed that they did not possess appreciable intramolecular ferromagnetic or ferrimagnetic interaction. Ac magnetic susceptibility measurements clarified that frequency dependence of out-of-phase ac susceptibility was observed only for Dy derivatives 1Dy and 2Dy, which is regarded as an indication of single-molecule magnets. (c) 2005 Elsevier Ltd. All rights reserved.

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页码：2588 / 2592

页数：5

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