A cyano-bridged hetero-tetranuclear [Sm2(o-phen)2(DMF)6(H2O)2(μ-CN)4Fe2(CN)8]•5H2O•CH3OH:: synthesis, structure, Mossbauer spectrum, and magnetism

被引：7
作者：
Huang, Ya-Feng [1 ]
Wei, Ho-Hsiang [1 ]
Katada, Motomi [2 ]
机构：
[1] Tamkang Univ, Dept Chem, Tamsui 25137, Taiwan
[2] Tokyo Metropolitan Univ, Grad Sch Sci, Tokyo 1920397, Japan
来源：
JOURNAL OF COORDINATION CHEMISTRY | 2008年 / 61卷 / 17期
关键词：
samarium; ferricyanide; cyanide-bridged lanthanide complexes; crystal structure; Mossbauer effect; magnetic properties;
D O I：
10.1080/00958970801958782
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Two new hetero-tetranuclear complexes, [Sm-2(o-phen)(2)(DMF)(6)(H2O)2(mu-CN)(4)Fe-2 (CN)(8)]center dot 5H(2)O center dot CH3OH (1) and [Sm-2(o-phen)(2)(DMF)(6)(H2O)(2)(mu-CN)(4)Co-2(CN)(8)]center dot 5H(2)O (2), have been prepared from reaction of SmCl3 center dot 6H(2)O, K-3[Fe(CN)(6)]center dot 3H(2)O or K-3[Co(CN)(6)], and o-phen in methanol/DMF, and characterized. The structure of I consists of a cyano-bridged discrete cyclic tetranuclear complex in which the Sm(III) and Fe(III) centers are linked by four CN groups. Mossbauer spectrum of 57 Fe indicates that both Fe(III) atoms in I have the same low-spin (S=1/2) electronic ground state. From comparison of the magnetic data of I and 2, at low temperature for I indicates weak ferromagnetic coupling between Sm(III) and Fe(III).
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页码：2683 / 2689
页数：7
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