Perfluoroarylgold complexes

Synthesis and Characterization of a Series of New Luminescent NHC‐Coordinated AuI–AgI Tetra‐ and Polymetallic Complexes Containing Benzoate‐Bridged Ag2 Dimers

“…[18] For example, Usón and co-workers [19] reported the orange compound {Au 2 (C 6 F 5 ) 2 Ag 2 (SC 4 H 8 ) 2 } n , which contains very small Ag-Au separations of 2.889 and 2.717 Å. The lack of a bridging ligand keeps the Ag-Ag separation large at 3.05 Å.…”

The Chemistry of Gold

“…Organometallic chemistry is very important because many compounds have been prepared starting from organometallic gold(III) precursors. The complexes [Au (C 6 F 5 ) 2 X 2 ] À and [Au(C 6 F 5 ) 2 Cl] 2 are also excellent starting materials for obtaining complexes with the Au(C 6 F 5 ) 2 unit [297]. Aryl gold(III) complexes are more numerous and complexes with perfluoroaryls, such as [Au(C 6 F 5 ) 3 (tht)] (Figure 1.59b) obtained by oxidative addition of [Au(C 6 F 5 )(tht)] with [Tl(C 6 F 5 ) 2 Cl] 2 , have been widely used as a starting material because of their high stability [297].…”

Gold–Heterometal Interactions and Bonds

“…The last years have revealed a continuous interest in the synthesis and investigation of compounds containing gold-thallium interactions, mainly due to their luminescent properties which suggest potential applications as LEDs or selective VOCs sensors [22,[50][51][52]. Three basic strategies were developed to prepare such compounds: (i) the use of bridging ligands containing different donor centers with affinity for these metal atoms and placed in the ligand skeleton at distances which bring the two metal atoms close enough to each other to result in supported intramolecular gold-thallium interactions; (ii) the use of gold-based metallocryptands which produce unsupported gold-thallium interactions by encapsulation of a thallium atom; (iii) the use of basic gold(I) complexes which can react with thallium(I) salts leading, via acid-base stacking, to supramolecular networks which contain unsupported gold-thallium interactions.…”

“…Based on the ability of relativistic heavy atoms to exhibit a marked tendency to form aggregates with metal-metal distances shorter than the sum of their van der Waals radii an exciting chemistry of compounds containing interactions between gold(I) and thallium(I) atoms, that is, centers with d 10 and s 2 configurations, was developed by Laguna and coworkers [22,[50][51][52]. They employed a synthetic strategy based on reactions between basic pentahalophenyl gold(I) complexes of the type [AuR 2 ] À (R ¼ C 6 Cl 5 , C 6 F 5 , C 6 Cl 2 F 3 -3,5) and Tl(I) salts as a Lewis acid, the resulting products being highly dependent on reaction conditions such as solvent, presence of ligands, and so on.…”