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A Controlled Route to a Luminescent 3 d10 -5 d10 Sulfido Cluster Containing Unique AuCu2 (μ3 -S) Motifs.

Alexander M PolgarChhatra B KhadkaMahmood Azizpoor FardBrian NikkelTerrence O'DonnellTobias NeumannKiana LahringKyle ThompsonCarolyn CadoganFlorian WeigendJohn F Corrigan
Published in: Chemistry (Weinheim an der Bergstrasse, Germany) (2016)
The first examples of gold(I) trimethylsilylchalcogenolate complexes were synthesized and their reactivity showcased in the preparation of a novel gold-copper-sulfur cluster [Au4 Cu4 S4 (dppm)2 ] (dppm=bis(diphenylphosphino)methane). The unprecedented structural chemistry of this compound gives rise to interesting optoelectronic properties, including long-lived orange luminescence in the solid state. Through time-dependent density functional theory calculations, this emission is shown to originate from ligand-to-metal charge transfer facilitated by Au⋅⋅⋅Cu metallophilic bonding.
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