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The structures of gold-doped bismuth clusters, AuBin– (n = 4–8), are investigated through a joint photoelectron spectroscopy and density functional theory (DFT) study. Well-resolved photoelectron spectra are obtained at several photon energies. Global minimum searches coupled with DFT calculations yield low-lying structures, whose relative energies are further evaluated by single-point energy calculations at the CCSD(T) level of theory. Vertical detachment energies are calculated with the inclusion of spin–orbit effects to compare with the experimental data. Three-dimensional structures are found to be dominant in this size range, while a planar low-lying isomer is observed only for AuBi4–. The AuBi6– cluster possesses a “bow-tie-like” global minimum structure. Major isomers of the other clusters studied here can all be viewed to possess this structural motif. The gold dopant favors increasingly higher coordination with bismuth in AuBin– (n = 4–8). Chemical bonding analyses are performed to understand the...

Structural Evolution of Gold-Doped Bismuth Clusters AuBin– (n = 4–8)

Structural Evolution of Gold-Doped Bismuth Clusters AuBi_n^– (n = 4–8)