A [2]Catenane and Pretzelane Based on Sn-Porphyrin and Crown Ether

[摘要]：A [2]catenane and a pretzelane that consist of one aromatic dialkylammonium spacer, one dibenzo-24-crown-8 (DB24C8) unit, and one Snporphyrin dihydroxide component were synthesized. In the [2]catenane, dibenzo-24-crown-8 and the Snporphyrin dihydroxide are two independent components, whereas in the pretzelane, dibenzo-24-crown-8 and the Snporphyrin dihydroxide are linked covalently. The interlocked molecules were obtained by the axial ligation of Snporphyrin dihydroxide with the resorcinol moieties of both termini in the aromatic dialkylammonium spacer.

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