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Self-assembly and steric hindrance for further host–guest interactions of a tetrahedral cage FeII4L4

Ning Bu, Wen-Yuan Wu, Peng Jiang, Zi-Yuan Zhan, Jin-Long Wan, Zi-Jing Wu, and Rong Wan

College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, People’s Republic of China



Received: 17 January 2021  Accepted: 27 April 2021


In this paper, a novel complex [FeII4L4]8+ was designed and synthesized from subcomponent self-assembly of C3-symmetric 2,4,6-tris(4-aminophenoxy)triazine, 3-methylpyridine-2-carboxaldehyde and iron(II) trifluoromethanesulfonate in CH3CN solution. The structure of target compound was confirmed by 1H NMR and ESI-MS measurements as a tetrahedral cage, and the host–guest interactions between the complex and a series of guest molecules were studied. The results show that the intermolecular interactions are relatively weak by comparison with other similar ligand’s complexes, which may be due to the steric effect of methyl groups adjacent to the peripheral apertures of the cage.

Keywords: Cage complex; Self-assembly; Iron(II); Host–guest interaction

Full paper is available at

DOI: 10.1007/s11696-021-01685-w


Chemical Papers 75 (9) 4493–4499 (2021)

Wednesday, April 24, 2024

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