Syntheses, structures, and magnetic properties of discrete cyano-bridged heterodinuclear complexes composed of MnIII(salen)-type complex and MIII(CN)6 anion (MIII = Fe, Mn, and Cr)

被引：15
|
作者：
Ishikawa, Ryuta [1 ]
Nakano, Motohiro [3 ]
Breedlove, Brian K. [1 ]
Yamashita, Masahiro [1 ,2 ]
机构：
[1] Tohoku Univ, Grad Sch Sci, Dept Chem, Sendai, Miyagi 9808578, Japan
[2] Japan Sci & Technol Agcy JST, Core Res Evolut Sci & Technol, Kawaguchi, Saitama 3320012, Japan
[3] Osaka Univ, Grad Sch Engn, Dept Appl Chem, Suita, Osaka 5650871, Japan
来源：
POLYHEDRON | 2013年 / 64卷
关键词：
Magnetic properties; Cyano-bridged; Manganese(III); Heterometallic; Single-molecule magnets; SINGLE-MOLECULE MAGNETS; CRYSTAL-STRUCTURE; (MN2MIII)-M-III(CN)(6) M; EXCHANGE INTERACTIONS; NETWORK STRUCTURES; LAYERED COMPOUND; CHAIN MAGNETS; GROUND-STATE; ANISOTROPY; RELAXATION;
D O I：
10.1016/j.poly.2013.06.012
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Reacting [Mn-III(5-TMAM(R)-salmen)(H2O)(2)](ClO4)(3)center dot H2O with [M-III(CN)(6)](3-) moieties yields a series of discrete cyano-bridged heterodinuclear complexes, [Mn-III(5-TMAM(R)-salmen)(H2O)M-III(CN)(6)]center dot 7H(2)O center dot MeCN (where 5-TMAM(R)-salmen = (R)-N,N'-(1-methylethylene)bis(5-trimethylammoniomethylsalicylideneiminate; M = Fe (1), Mn (2), and Cr (3)). dc magnetic susceptibility and magnetization studies on powdered samples showed that the Mn-III(5-TMAM(R)-salmen) moiety had significant uniaxial anisotropy and that [M-III(CN)(6)](3-) moieties of 1 and 2 had magnetic anisotropy due to unquenched orbital angular momenta, which significantly affects the magnetic behavior of this system. Frequency-dependent ac susceptibility signals indicated that slow magnetic relaxation was occurring, meaning that 1 and 2 behave as single-molecule magnets. Crown Copyright (C) 2013 Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：346 / 351
页数：6
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