Dicyanometalate chemistry: A type of versatile building block for the construction of cyanide-bridged molecular architectures
Dicyanometalate chemistry: A type of versatile building block for the construction of cyanide-bridged molecular architectures
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DOI：
10.1016/j.ccr.2011.10.029
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发表时间：
2012-02
影响因子：
20.6
通讯作者：
Shi Wang;Xue-Hua Ding;Yonghua Li;Wei Huang
中科院分区：
文献类型：
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作者：
Shi Wang;Xue-Hua Ding;Yonghua Li;Wei Huang
氰基桥联分子基磁性材料，如单分子磁体(SMM)和单链磁体(SCM)，在过去的十年里引起了人们极大的研究兴趣。在具有丰富配位能力的氰基分子前驱体中，我们注意到金属氰酸盐[MA(L)(CN)2]n(MA=FeIII/II，RuIII/II，OsIII/II，CoII，CrIII；n=−1，0，+1；L=多齿封闭配体)与各种金属离子连接的能力导致了从离散的多核配合物到各种一维(1D)、二维(2D)和三维(3D)组装的广泛多样性的结构。其中一些是具有良好光吸收性能的氰基桥联SMM、SCM、可切换分子材料或化学传感器。使用封闭的四齿有机配体导致了许多多核化合物，包括二、三、四、十二核和多维金属氰化物结构。本文综述了这些配合物的结构拓扑结构及其相关的磁性、光谱性质，突出了典型的例子，并指出了该领域有待发展的主要可能方向。从晶体工程的观点来看，这些化合物应该为进一步设计和研究这类难以捉摸的含双氰基金属的化合物提供有用的信息。
Cyanide-bridged molecule-based magnetic materials with reduced dimensionality, such as single-molecule magnets (SMMs) and single-chain magnets (SCMs), have attracted great research interest during the last decade. Among the cyanide-based molecular precursors with ample coordinating capability, we note the ability of the dicyanometalate [MA(L)(CN)2]n(MA=FeIII/II, RuIII/II, OsIII/II, CoII, CrIII; n=−1, 0, +1; L=polydentate blocking ligand) to link various metal ions leads to a wide diversity of structural architectures ranging from discrete polynuclear complexes to various one-dimensional (1D), two-dimensional (2D) and three-dimensional (3D) assemblies. Some of these are promising cyanide-bridged SMMs, SCMs, switchable molecular materials or chemosensors with good light absorbing properties. The use of blocking tetradentate organic ligands results in a number of polynuclear compounds containing di-, tri-, tetra-, dodecanuclear and multidimensional metal-cyanide architectures. Here we review the structural topologies of these complexes and their related magnetic, spectroscopic properties, highlight typical examples, and point out the main possible directions that remain to be developed in this field. From the crystal engineering point of view, the compounds reviewed here should provide useful information for further design and investigation on this elusive class of dicyanometalte-bearing compounds.