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Medientyp:
E-Artikel
Titel:
Mercaptothiacalixarenes Steer 24 Copper(I) Centers to form a Hollow‐Sphere Structure Featuring Cu2S2 Motifs with Exceptionally Short Cu⋅⋅⋅Cu Distances
Beschreibung:
<jats:title>Abstract</jats:title><jats:p>Tetramercaptotetrathiacalix[4]arene (<jats:bold>LH<jats:sub>4</jats:sub></jats:bold>) can be used as a coordination platform to bind four Cu<jats:sup>I</jats:sup> ions at the thiolate and thioether S atoms. Donor ligands such as phosphanes can stabilize the resulting <jats:bold>[LCu<jats:sub>4</jats:sub>]</jats:bold> units, which then remain monomeric (<jats:bold>[(Ph<jats:sub>3</jats:sub>PCu)<jats:sub>4</jats:sub>L]</jats:bold>). In the absence of donor ligands, they aggregate, providing a hexamer (<jats:bold>[LCu<jats:sub>4</jats:sub>]<jats:sub>6</jats:sub></jats:bold>) in high yields, with a hollow‐sphere structure formed by an unprecedented Cu<jats:sub>24</jats:sub>S<jats:sub>48</jats:sub> 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.</jats:p>