Cyano-bridged MnIII3MIII (MIII = Fe, Cr) complexes : Synthesis, structure, and magnetic properties
Cyano-bridged MnIII3MIII (MIII = Fe, Cr) complexes : Synthesis, structure, and magnetic properties
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DOI：
10.1021/ic0505753
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发表时间：
2005-07
影响因子：
4.6
通讯作者：
H. Miyasaka;Hitomi Takahashi;Tomokura Madanbashi;K. Sugiura;R. Clérac;H. Nojiri
中科院分区：
文献类型：
--
作者：
H. Miyasaka;Hitomi Takahashi;Tomokura Madanbashi;K. Sugiura;R. Clérac;H. Nojiri
使用 {NH2(n-C12H25)2}3[MIII(CN)6] (MIII = Fe, Cr) 起始材料选择性合成了由化学计量比为 3:1 的 Mn(III) salen（salen = N,N'-亚乙基双（水杨亚胺））和六氰基金属酸盐（III）（M = Fe, Cr）组成的氰基桥联四核配合物： [{Mn(salen)(EtOH)}3{M(CN)6}]（M = Fe，1；Cr，2）。化合物 1 和 2 是具有 T 形结构的同构结构，其中 [M(CN)6]3- 呈子午三齿结构单元结合三个 [Mn(salen)(EtOH)]+ 单元。磁化强度场依赖性的强频率依赖性和磁滞现象的观察表明 1 是单分子磁体。
Two cyano-bridged tetranuclear complexes composed of Mn(III) salen (salen = N,N‘-ethylene bis(salicylideneiminate)) and hexacyanometalate(III) (M = Fe, Cr) in a stoichiometry of 3:1 have been selectively synthesized using {NH2(n-C12H25)2}3[MIII(CN)6] (MIII = Fe, Cr) starting materials: [{Mn(salen)(EtOH)}3{M(CN)6}] (M = Fe, 1; Cr, 2). Compounds 1 and 2 are isostructural with a T-shaped structure, in which [M(CN)6]3- assumes a meridional-tridentate building block to bind three [Mn(salen)(EtOH)]+ units. The strong frequency dependence and observation of hysteresis on the field dependence of the magnetization indicate that 1 is a single-molecule magnet.