Nature Reviews Chemistry 1, 0017 (2017)

Errors existed in the originally published version of figure 5 in this Review. Thiolate RS, generated from thiol RSH and NaBH4, reacts with HAuCl2 to afford Au(I) thiolates. Au(0) thiyls can form on treating Au metal with RSH or RSSR, or from a mixture containing HAuCl2, RSSR and acid. The amended figure 5 appears in both the HTML and PDF versions.