Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 57, Issue 51, Pages 16816-16820Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201811711
Keywords
gold; metalloligands; metallotweezers; N-heterocyclic carbenes; self-assembly
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Funding
- Universitat Jaume I [UJI-B2017-07, UJI-A2017-02]
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A U-shaped di-gold metallotweezer with two pyrene-imidazolylidene edges and a xanthenyl-bis-alkynyl connector was prepared. This metallotweezer acts as metalloligand in the presence of Cu+, Tl+, or Ag+, showing three clearly distinct coordination patterns depending on the cation used. The coordination to Cu+ leads to a complex in which the metalloligand is coordinated in a pincer form. The reaction with Tl+ affords a complex in which the ligand is acting as a kappa(2)-(trans)-chelate ligand. The reaction with Ag+ leads to a self-assembled structure, with two silver cations encased inside the cavity of a duplex structure formed by two self-assembled metallotweezers.
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