Syntheses, structures, and magnetic properties of manganese-lanthanide hexanuclear complexes

被引：30
|
作者：
Shiga, Takuya [1 ]
Hoshino, Norihisa [1 ]
Nakano, Motohiro [2 ]
Nojiri, Hiroyuki [3 ]
Oshio, Hiroki [1 ]
机构：
[1] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058571, Japan
[2] Osaka Univ, Grad Sch Engn, Dept Appl Chem, Suita, Osaka 5650871, Japan
[3] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan
来源：
INORGANICA CHIMICA ACTA | 2008年 / 361卷 / 14-15期
关键词：
magnetism; lanthanide; manganese; Schiff-base;
D O I：
10.1016/j.ica.2008.03.096
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Reactions of manganese acetate and lanthanide acetate with Schiff-base ligands (H(3)beemp = 2,6-bis[((2(2-hydroxyethoxy)ethyl)imino)methyl]-4-methylphenol) yielded hexanuclear clusters of [ Mn(4)(III)Ln(2)(III)(mu(3)-O)(2)(Hbeemp)(2)(OAc)(8)(mu(3)-OMe)(2)(H(2)O)(2)] center dot C(8)H(17)OH (Ln = Gd, Tb, and Y for 1, 2, and 3, respectively). Magnetic susceptibility measurements revealed that the mixed spin systems of 1 and 2 showed ferrimagnetic behavior, while antiferromagnetic interactions were operative among Mn(3+) ions in 3. Ac magnetic susceptibility measurements for 2 showed frequency dependent in-and out-of-phase signals, confirming slow magnetic relaxation of spin reorientations. (c) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：4113 / 4117
页数：5
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