Cyanide‐Bridged Tetranuclear REIII2FeIII2 (RE = Y, Tb, Dy) Molecular Squares with 2, 2′:6′,2′′‐Terpyridine as a Capping Ligand
Cyanide‐Bridged Tetranuclear REIII2FeIII2 (RE = Y, Tb, Dy) Molecular Squares with 2, 2′:6′,2′′‐Terpyridine as a Capping Ligand
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DOI：
10.1002/zaac.201400555
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发表时间：
2015-04
期刊：
影响因子：
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通讯作者：
Hu Zhou;Deng-Yong Yu;Hongbo Zhou;Aihua Yuan
中科院分区：
文献类型：
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作者：
Hu Zhou;Deng-Yong Yu;Hongbo Zhou;Aihua Yuan
以三齿配体2, 2':6',2''-三联吡啶(terpy)为封端配体，水合稀土(RE)硝酸酯RE(NO3)3·6H2O与K3Fe(CN)6在H2O/DMF溶液中发生自组装反应，生成了三种氰化物桥联化合物[RE(terpy)(DMF)(H2O)2][Fe(CN)6]·6H2O [RE = Y (1), Tb (2), Dy (3)]。 FT-IR 光谱证实了化合物 1-3 中存在三联配体和氰化物基团。单晶X射线结构分析表明，这些化合物是同晶的，采用中性的[RE2Fe2]分子方体，通过氢键相互作用进一步连接形成三维超分子网络。磁化率测量表明，显着的单离子磁各向异性主导了这些化合物的特性。
Self-assembly reaction between hydrated rare-earth (RE) nitrates RE(NO3)3·6H2O with K3Fe(CN)6 in H2O/DMF solution by employing the tridentate ligand 2, 2′:6′,2′′-terpyridine (terpy) as a capping ligand has yielded three cyanide-bridged compounds [RE(terpy)(DMF)(H2O)2][Fe(CN)6]·6H2O [RE = Y (1), Tb (2), Dy (3)]. FT-IR spectra confirmed the presence of terpy ligands and cyanide groups in compounds 1–3. Single-crystal X-ray structural analysis indicated that these compounds are isomorphous and adopt neutral [RE2Fe2] molecular squares, which are further linked through hydrogen bonding interactions to generate a three-dimensional supramolecular network. Magnetic susceptibility measurements revealed that significant single ion magnetic anisotropy dominates the properties of these compounds.