Discrete and polymeric, mono- and dinuclear silver complexes of a macrocyclic tetraoxime ligand with AgI-AgI interactions.
Discrete and polymeric, mono- and dinuclear silver complexes of a macrocyclic tetraoxime ligand with AgI-AgI interactions.
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DOI：
10.3390/s130505671
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发表时间：
2013-05-02
期刊：
影响因子：
--
通讯作者：
Shionoya M
中科院分区：
文献类型：
--
作者：
Tashiro S;Tanihira J;Yamada M;Shionoya M
大环化合物可以有效和选择性地结合阳离子，具有作为金属离子化学传感器的巨大潜力。最近，我们开发了一种四肟型四氮杂环配体1，通过简单的一锅环化反应形成。为了探索和挖掘四肟大环1作为螯合传感器的潜力，本文报道了几种1的银配合物的制备，并通过单晶x射线衍射分析确定了它们独特的配位结构。结果表明，单体配合物[Ag(1)X] （X =反阴离子）和二聚体配合物[Ag2(1)2]X2形成了两种离散结构，单核配合物[Ag(1)]nXn和双核配合物[Ag2(1)X2]n形成了两种聚合物结构。在所得到的配合物中，发现结构灵活的大环配体1提供了几种不同的配位模式。值得注意的是，在一些1的银配合物中，可以观察到不同距离的AgI-AgI相互作用，这取决于反阴离子的种类和化学成分。
Macrocyclic compounds that can bind cationic species efficiently and selectively with their cyclic cavities have great potential as excellent chemosensors for metal ions. Recently, we have developed a tetraoxime-type tetraazamacrocyclic ligand 1 formed through a facile one-pot cyclization reaction. Aiming to explore and bring out the potential of the tetraoxime macrocycle 1 as a chelating sensor, we report herein the preparation of several kinds of silver complexes of 1 and their unique coordination structures determined by single-crystal X-ray diffraction analyses. As a result, the formation of two kinds of discrete structures, monomeric complexes [Ag(1)X] (X = counter anions) and a dimeric complex [Ag2(1)2]X2, and two kinds of polymeric structures from a mononuclear complex, [Ag(1)]nXn, and from a dinuclear complex, [Ag2(1)X2]n, was demonstrated. In the resulting complexes, the structurally flexible macrocyclic ligand 1 was found to provide several different coordination modes. Notably, in some silver complexes of 1, AgI–AgI interactions were observed with different AgI–AgI distances which depend on the kind of counter anions and the chemical composition.
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影响因子：
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作者：
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通讯作者：
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20.6
作者：
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