Complexes with Atomic Gold Ions: Efficient Bis-Ligand Formation

Complexes with Atomic Gold Ions : Efficient Bis-Ligand Formation

Complexes of atomic gold with a variety of ligands have been formed by passing helium nanodroplets (HNDs) through two pickup cells containing gold vapor and the vapor of another dopant, namely a rare gas, a diatomic molecule (H-2, N-2, O-2, I-2, P-2), or various polyatomic molecules (H2O, CO2, SF6, C6H6, adamantane, imidazole, dicyclopentadiene, and fullerene). The doped HNDs were irradiated by electrons; ensuing cations were identified in a high-resolution mass spectrometer. Anions were detected for benzene, dicyclopentadiene, and fullerene. For most ligands L, the abundance distribution of AuLn+ versus size n displays a remarkable enhancement at n = 2. The propensity towards bis-ligand formation is attributed to the formation of covalent bonds in Au+L2 which adopt a dumbbell structure, L-Au+-L, as previously found for L = Xe and C-60. Another interesting observation is the effect of gold on the degree of ionization-induced intramolecular fragmentation. For most systems gold enhances the fragmentation, i.e., intramolecular fragmentation in AuLn+ is larger than in pure L-n(+). Hydrogen, on the other hand, behaves differently, as intramolecular fragmentation in Au(H-2)(n)(+) is weaker than in pure (H-2)(n)(+) by an order of magnitude.

Gruber, Elisabeth (author)
Martini, PaulStockholms universitet,Fysikum,Universität Innsbruck, Austria(Swepub:su)pama2814 (author)
Goulart, Marcelo (author)
Gatchell, MichaelStockholms universitet,Fysikum,Universität Innsbruck, Austria(Swepub:su)miga8512 (author)
Rasul, Bilal (author)
Echt, Olof (author)
Zappa, Fabio (author)
Mahmoodi-Darian, Masoomeh (author)
Scheier, Paul (author)
Stockholms universitetFysikum (creator_code:org_t)

By the author/editor: Duensing, Felix; Gruber, Elisabet ...; Martini, Paul; Goulart, Marcelo; Gatchell, Michae ...; Rasul, Bilal; show more...; Echt, Olof; Zappa, Fabio; Mahmoodi-Darian, ...; Scheier, Paul; show less...

About the subject

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.