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The Complex Coordination Landscape of a Digold(I) U-Shaped Metalloligand
Susana Ibáñez1, Macarena Poyatos1, Eduardo Peris1
1Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universitat Jaume I, Av. Vicente Sos Baynat s/n, 12071, Castellón, Spain.
Abstract:
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 ϰ2 -(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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