部分氮原子转移：一种设计单分子磁体的新型合成工具。
Partial nitrogen atom transfer: a new synthetic tool to design single-molecule magnets.
作者信息
Ding Mei, Rouzières Mathieu, Losovyj Yaroslav, Pink Maren, Clérac Rodolphe, Smith Jeremy M
机构信息
Department of Chemistry, Indiana University , 800 E. Kirkwood Avenue, Bloomington, Indiana 47405, United States.
CNRS, CRPP, UPR 8641 , F-33600 Pessac, France.
出版信息
Inorg Chem. 2015 Sep 21;54(18):9075-80. doi: 10.1021/acs.inorgchem.5b01455. Epub 2015 Aug 31.
Incomplete nitrogen atom transfer from the iron(IV) nitride complex PhB(MesIm)3Fe≡N to the vanadium(III) complex V(Mes)3(THF) quantitatively provides the bimetallic complex PhB(MesIm)3Fe-N═V(Mes)3. Structural and spectroscopic characterizations reveal that the nitride ligand forms a linear bridge between V(V) and high-spin Fe(II) metal ions, confirming that atom transfer is accompanied by electron transfer. In the presence of an applied dc field, the complex displays slow relaxation of the magnetization, revealing its single-molecule magnet properties with an estimation of the energy barrier at about 10 K. This complex establishes a synthetic principle for the assembly of paramagnetic complexes bridged by nitride ligands.
从氮化铁（IV）配合物PhB（MesIm）₃Fe≡N到钒（III）配合物V（Mes）₃（THF）的不完全氮原子转移定量地生成了双金属配合物PhB（MesIm）₃Fe-N═V（Mes）₃。结构和光谱表征表明，氮化物配体在V（V）和高自旋Fe（II）金属离子之间形成了线性桥，证实了原子转移伴随着电子转移。在施加直流场的情况下，该配合物表现出磁化强度的缓慢弛豫，揭示了其单分子磁体性质，估计能垒约为10 K。这种配合物确立了由氮化物配体桥联的顺磁性配合物组装的合成原理。
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