Atomically precise Au₁₄₄(SR)₆₀ nanoclusters (R = Et, Pr) are capped by 12 distinct ligand types of 5-fold equivalence and display gigantic diastereotopic effects.

ABSTRACT: For two decades, Au₁₄₄(SR)₆₀ has been one of the most studied and used thiolate (SR) protected gold nanoclusters. In many ways, however, it proved to be a challenging and elusive case, also because of the difficulties in solving its structure by single-crystal X-ray crystallography. We used very short thiols and could prepare Au₁₄₄(SC₂H₅)₆₀ and Au₁₄₄(SC₃H₇)₆₀ in a very pure form, which was confirmed by UV-vis absorption spectroscopy and very regular electrochemistry patterns. Inductively coupled plasma and electrospray ionization mass spectrometries gave definite proof of the Au₁₄₄(SR)₆₀ stoichiometry. High-resolution 1D and 2D NMR spectroscopy in the solution

SUBMITTER: Dainese T 

PROVIDER: S-EPMC6301266 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature