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首页> 外文期刊>Chemistry: A European journal >Ruthenium(II) Complexes of Aryl Triazole Foldamers as Receptors for Anions
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Ruthenium(II) Complexes of Aryl Triazole Foldamers as Receptors for Anions

机译：芳基三唑折叠剂的钌（II）配合物作为阴离子的受体

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摘要

Ruthenium(II) complexes of oligo(bipyridine-phenyl triazole)s were synthesized as receptors for anions. The receptors, which are partially preorganized through metal-ligand interactions, can fold into a helical conformation to bind chloride, bromide, iodide, or nitrate anions in their inner cavities in acetone or competitive H-bonding media such as 5% water in acetone and DMSO. The short oligomer 1 can sandwich the studied anions with high affinity in acetone. Addition of 5% water to acetone results in overall decreases in the binding strength due to the binding competition from water, but does not change the basic binding mode. The highly competitive H-bonding solvent DMSO causes the receptor-anion interactions to become even weaker. However, in DMSO, the short receptor 1 is still able to bind the halide anions with moderate affinities in a 1:1 stoichiometry, whereas the longer oligomer 2 forms double-strand helices with an anion wrapped inside for all anions investigated so far.
机译：合成了寡聚（联吡啶-苯基三唑）的钌（II）络合物作为阴离子的受体。通过金属-配体相互作用部分预组织的受体可以折叠成螺旋构象，以在丙酮或竞争性的H键介质（如5％的丙酮和水）中将氯离子，溴离子，碘离子或硝酸根阴离子结合在内腔中。 DMSO。短低聚物1可以将所研究的阴离子以高亲和力夹在丙酮中。由于与水的结合竞争，向丙酮中添加5％的水会导致结合强度整体下降，但不会改变基本的结合方式。竞争激烈的氢键溶剂DMSO导致受体-阴离子相互作用变得更弱。但是，在DMSO中，短受体1仍然能够以1：1的化学计量比以中等亲和力结合卤化物阴离子，而较长的低聚物2形成双链螺旋，其中阴离子被包裹在其中，直至目前为止所有已研究的阴离子。

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