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首页> 外文期刊>Polyhedron: The International Journal for Inorganic and Organometallic Chemistry >Low dimensional magnetic assemblies based on Mn-III(Schiff base) and/or Mer-tricyanidoferrate building blocks: Syntheses, crystal structures and magnetic properties
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Low dimensional magnetic assemblies based on Mn-III(Schiff base) and/or Mer-tricyanidoferrate building blocks: Syntheses, crystal structures and magnetic properties

机译：基于Mn-III（席夫碱）和/或高铁氰基氰铁酸盐构建基的低维磁性组件：合成，晶体结构和磁性

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摘要

Four new Mn-III(Schiff base) and/or [Fe-III(L)(CN)3]- (L = mpzcq, qcq) based complexes, PPh4[Fe-III(mqzcq) (CN)(3)]center dot 4H(2)O (1), {[Mn-III(5-CH3O-salen)(H2O)](2)[Fe-III(mqzcq)(CN)(3)](2))-2H(2)O (2), {[Mn-III(5-CH3-salen)] [FeIII(mqzcq)(CN)3]}center dot H2O center dot-CH3CN (3) and {[Mn-III(4-CH3O-salcy)] [Fe-III(qcq)(CN)(3)])center dot 2CH(3)CN (4) (mqzcq = 8-(5-methylpyrazine-2-carboxamido)quinoline; qcq = 8-(2-quinoline-2-carboxamido)quinoline; salen = N,N '-ethylenebis(salicylideneiminato) dianion; salcy = N,N '-(1,2-cyclohexanediylethylene)bis(salicylide-neiminate) were synthesized and characterized structurally and magnetically. The results reveal that 1 and 2 are discrete 0-D structures while 3 and 4 are 1-D zigzag neutral chains. Notably, the out-of-plane Mn-2 dimer, {[Mn-III(5-CH3O-salen)(H2O)](2)(2+) and [Fe-III(mpzcq)(CN)(3)]- are both presented in 2 with the Mn-2 dimer being further organized into 1-D supramolecular chain arrangement via hydrogen bonds interactions. Magnetic investigation indicates that weak intradimer ferromagnetic coupling exists in 2 while dominant intrachain antiferromagnetic couplings in 3 and 4. Moreover, slow magnetic relaxations were also observed for 2 and 3. (C) 2014 Elsevier Ltd. All rights reserved.
机译：四种新的Mn-III（席夫碱）和/或[Fe-III（L）（CN）3]-（L = mpzcq，qcq）基络合物PPh4 [Fe-III（mqzcq）（CN）（3）]中心点4H（2）O（1），{[Mn-III（5-CH3O-salen）（H2O）]（2）[Fe-III（mqzcq）（CN）（3）]（2））-2H （2）O（2），{[Mn-III（5-CH3-salen）] [FeIII（mqzcq）（CN）3]}中心点H2O中心点-CH3CN（3）和{[Mn-III（4 -CH3O-salcy）] [Fe-III（qcq）（CN）（3）]）中心点2CH（3）CN（4）（mqzcq = 8-（5-甲基吡嗪-2-甲酰胺基）喹啉; qcq = 8 -（2-喹啉-2-甲酰胺基）喹啉; salen ＝ N，N′-亚乙基双（水杨基亚胺基）二价阴离子; salcy ＝ N，N′-（1,2，环己烷二基乙烯）双（水杨酸-亚胺基）并进行结构表征结果表明，1和2是离散的0-D结构，而3和4是1-D曲折中性链。值得注意的是，面外Mn-2二聚体{[Mn-III（5-CH3O -salen）（H2O）]（2）（2+）和[Fe-III（mpzcq）（CN）（3）]-均以2表示，其中Mn-2二聚体进一步组织成一维超分子链通过氢键相互作用进行排列。磁性研究表明，2中存在弱的二聚体铁磁耦合，而3和4中存在显性链内反铁磁耦合。此外，2和3也观察到缓慢的磁弛豫。（C）2014 Elsevier Ltd.保留所有权利。

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