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首页> 外文期刊>Chemistry: A European journal >Selective Metal-Cation Recognition by [2.2]Ferrocenophanes: The Cases of Zinc- and Lithium-Sensing
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Selective Metal-Cation Recognition by [2.2]Ferrocenophanes: The Cases of Zinc- and Lithium-Sensing

机译：[2.2]二茂铁金属的选择性金属阳离子识别：锌和锂感测的情况。

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摘要

The synthesis, electrochemical, optical, and cation-sensing properties of [2.2]ferrocenophanes, in which the two ferrocene subunits are linked through two aldiminic or iminophosphorane moieties, are reported. The new compounds show remarkably selective cation-sensing properties due to the presence of redox-active units (ferrocene) and aza-unsaturated functionalities that are able to act as putative cation-binding sites. In this structural motif, the aldimine groups act as a highly selective binding site for Zn2+ cations, whereas the iminophosphorane bridges display an unusually strong binding affinity towards Li+ cations, which could be explained by an additional Li···Fe interaction. The X-ray structure of the complex 4·Li+ as well as detailed NMR spectroscopic studies, both in solution and in the solid state, support this assessment. Experimental data and conclusions about the cationsensing capabilities of this family of compounds are supported by DFT calculations.
机译：报道了[2.2]二茂铁基的合成，电化学，光学和阳离子传感特性，其中两个二茂铁亚基通过两个醛亚胺基或亚氨基正膦基部分连接。由于存在氧化还原活性单元（二茂铁）和氮杂不饱和官能团（可以充当假定的阳离子结合位点），因此新化合物显示出显着的选择性阳离子敏感特性。在该结构基序中，醛亚胺基团充当Zn2 +阳离子的高度选择性结合位点，而亚氨基膦烷桥则显示出对Li +阳离子的异常强的结合亲和力，这可以通过额外的Li···Fe相互作用来解释。溶液和固态中的复合物4·Li +的X射线结构以及详细的NMR光谱研究均支持该评估。 DFT计算支持了有关该族化合物阳离子传感能力的实验数据和结论。

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