4.3 Article

Engineering Te-Containing Recognition Modules for Chalcogen Bonding: Towards Supramolecular Polymeric Materials

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HELVETICA CHIMICA ACTA
卷 106, 期 2, 页码 -

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WILEY-V C H VERLAG GMBH
DOI: 10.1002/hlca.202200159

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chalcogen bonds; organic synthesis; supramolecular chemistry; tellurium; X-ray diffraction

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In order to prepare one-dimensional chalcogen-bonded supramolecular polymers in the solid state, different synthesis methods were explored to obtain ditopic molecular modules. Te-ligand rings were initially chosen as recognition units due to their ability to self-assemble through double Te center dot center dot center dot N chalcogen bonds. Another synthetic strategy involved the preparation of pyridyl-modified ebselen Te-containing analogues, but unexpected Te-containing lactone and spiro-type Te(IV)-containing derivatives were obtained instead.
Aiming at the preparation of one-dimensional (1D) chalcogen-bonded supramolecular polymers at the solid state, this work describes the different syntheses which have been challenged to obtain ditopic molecular modules. At first, tellurazolopyridyl (TZP) rings have been chosen as recognition units, given their well-proven ability and persistency to self-assemble through double Te center dot center dot center dot N chalcogen bonds (ChBs). The second synthetic strategy dealt with the preparation of pyridyl-modified ebselen Te-containing analogues. By attempting several synthetic protocols, the targeted ebselen derivatives could not be obtained, whereas an unexpected Te-containing lactone as well as a spiro-type Te(IV)-containing derivatives were isolated, with the latter investigated by X-ray diffraction (XRD) analysis.

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