Upon treatment with Zn^II ions, a series of BINOL-bridged bis(phenanthroline) ligands was self-assembled into [M₂L₃] metallocages, which were carefully characterized by NMR spectroscopy and ESI-MS spectrometry. Among them, a racemic mixture of the BINOL-bridged bis(phenanthrolines) underwent chiral self-sorting to afford two homochiral metallocages. The narcissistic self-sorting process of the metallocages was observed in the complexation reaction of the constitutionally isomeric bis(phenanthrolines) with varying connection positions. Moreover, the endo hydroxyl-functionalized metallocage [Zn₂{(S)-L2^OH}₃] exhibited catalytic activity and substrate selectivity for the Knoevenagel condensation reactions of aromatic tricarbaldehydes with malononitrile.

中文翻译：

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BINOL桥联的双（菲咯啉）金属位的自组装和催化反应性

经Zn ^II离子处理^后，将一系列BINOL桥联的双（菲咯啉）配体自组装为[M ₂ L ₃ ]金属位点，并通过NMR光谱学和ESI-MS光谱学对其进行了仔细表征。其中，由BINOL桥联的双（菲咯啉）的外消旋混合物进行手性自分选，得到两个同手性金属位点。在具有变化的连接位置的结构异构双（菲咯啉）的络合反应中观察到金属位点的自恋自选过程。此外，内羟基官能化金属位点[Zn ₂ {（S）-L2 ^OH } ₃对芳族三甲醛与丙二腈的Knoevenagel缩合反应具有催化活性和底物选择性。