Stibine-protected Au₁₃ nanoclusters: syntheses, properties and facile conversion to GSH-protected Au₂₅ nanocluster.

ABSTRACT: Monostibine-protected ionic Au₁₃ nanoclusters, namely, [Au₁₃(L)₈(Cl)₄][Cl] (L= SbPh₃, 2a·Cl; Sb(p-tolyl)₃, 2b·Cl) were prepared by the direct reduction of Au(L)Cl with NaBH₄ in dichloromethane. Anion exchange with 2a·Cl afforded [Au₁₃(SbPh₃)₈(Cl)₄][X] (X = PF₆, 2a·PF₆; BPh₄, 2a·BPh₄). All these have been characterized by multinuclear NMR, ESI-MS and UV-Vis spectroscopy. Crystallographic analysis of 2a·BPh₄ reveals that the cation possesses C _2v symmetry and the tridecagold core adopts a closed icosahedron configuration. The weaker coordinating ability

SUBMITTER: Li YZ 

PROVIDER: S-EPMC6289101 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature