Polarized Supramolecular Aggregates Based on Luminescent Perhalogenated Gold Derivatives

The reaction of [Au­(C₆F₅)­(tht)] (tht = tetrahydrothiophene) with 1,3,5-triaza-7-phosphaadamantane (PTA) and 3,7-diacetyl-1,3,7-triaza-5-phosphabicyclo[3.3.1]­nonane (DAPTA) leads to the formation of [Au­(C₆F₅)­(phosph)] (phosph = PTA, <b>1</b>; phosph = DAPTA, <b>2</b>). The compounds are slightly soluble in water and aggregate at higher concentrations, giving rise to the formation of needle- and rodlike structures (<b>1</b>) and well-organized spherical aggregates (<b>2</b>). Compounds <b>1</b> and <b>2</b> were reacted with AgPF₆, giving rise to the formation in all cases of luminescent water-soluble 1:1 Au···Ag heterometallic complexes, as evidenced by X-ray crystal structure determination. The use of different silver salts that differ on the counterion induces changes in the resulting luminescence and aggregation morphology