The syntheses and photophysical properties of PNP-based Au(i) complexes with strong intramolecular Au center dot center dot center dot Au interactions

Abstract

Herein we report the syntheses, X-ray structures and photophysical studies of the dinuclear dimeric gold(i) complexes [ClAu(C6H5N)(PPh2)(2)](2) (1), [Au(C6H5N)(PPh2)(2)](2)[SbF6](2) (2) and [Au(2,6-Me2C6H3N)(PPh2)(2)](2)[SbF6](2) (4). We have used ligands with different substituents to see the effect of the substituents on the photophysical properties. All these complexes feature strong intramolecular AuAu interactions (2.7987-3.0056 angstrom) and were found to exhibit excellent luminescence properties with high quantum yields as well as different colors of emission.