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Mercaptothiacalixarenes Steer 24 Copper(I) Centers to form a Hollow-Sphere Structure Featuring Cu2 S2 Motifs with Exceptionally Short Cu???Cu Distances.

ABSTRACT: Tetramercaptotetrathiacalix[4]arene (LH4 ) can be used as a coordination platform to bind four CuI ions at the thiolate and thioether S atoms. Donor ligands such as phosphanes can stabilize the resulting [LCu4 ] units, which then remain monomeric ([(Ph3 PCu)4 L]). In the absence of donor ligands, they aggregate, providing a hexamer ([LCu4 ]6 ) in high yields, with a hollow-sphere structure formed by an unprecedented Cu24 S48 cage that is surrounded by the organic framework of the calixarene chalices. Preliminary NMR experiments with regard to the host-guest chemistry in solution showed that the compound represents a polytopic host for acetonitrile and methane.

SUBMITTER: Frank N

PROVIDER: S-EPMC7187159 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature

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Mercaptothiacalixarenes Steer 24 Copper(I) Centers to form a Hollow-Sphere Structure Featuring Cu2 S2 Motifs with Exceptionally Short Cu⋅⋅⋅Cu Distances.

Frank Nicolas N Dallmann André A Braun-Cula Beatrice B Herwig Christian C Limberg Christian C

Angewandte Chemie (International ed. in English) 20200303 17

Tetramercaptotetrathiacalix[4]arene (LH4 ) can be used as a coordination platform to bind four CuI ions at the thiolate and thioether S atoms. Donor ligands such as phosphanes can stabilize the resulting [LCu4 ] units, which then remain monomeric ([(Ph3 PCu)4 L]). In the absence of donor ligands, they aggregate, providing a hexamer ([LCu4 ]6 ) in high yields, with a hollow-sphere structure formed by an unprecedented Cu< ...[more]

PMID: 32009289

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