Noble Metal Corrosion: Halogen Bonded Iodocarbenium Iodides Dissolve Elemental Gold—Direct Access to Gold–Carbene Complexes

Holthoff JM, Engelage E, Kowsari AB, Huber SM, Weiss R (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Chemistry - A European Journal Wiley

DOI: 10.1002/chem.201901583

Abstract

A common method to dissolve elemental gold involves the combination of an oxidant with a Lewis base that coordinates to the gold surface, thus lowering the metal's redox potential. Herein we report the usage of organic iodide salts, which provide both oxidative power and a coordinating ligand, to dissolve gold under formation of organo-gold complexes. The obtained products were identified as Au III complexes, all featuring Au−C bonds, as shown by X-ray single-crystal analysis, and can be isolated in good yields. Additionally, our method provides direct access to N-heterocyclic carbene (NHC-type) complexes and avoids costly organometallic precursors. The investigated complexes show dynamic behavior in acetonitrile and in the case of the NHC(-type) complexes, the involved species could be identified as a monocarbene [AuI 3 (carbene)] and biscarbene complex [AuI 2 (carbene) 2 ] + .

Involved external institutions

Argonne National Laboratory US United States (USA) (US)

How to cite

APA:

Holthoff, J.M., Engelage, E., Kowsari, A.B., Huber, S.M., & Weiss, R. (2019). Noble Metal Corrosion: Halogen Bonded Iodocarbenium Iodides Dissolve Elemental Gold—Direct Access to Gold–Carbene Complexes. Chemistry - A European Journal. https://dx.doi.org/10.1002/chem.201901583

MLA:

Holthoff, Jana M., et al. "Noble Metal Corrosion: Halogen Bonded Iodocarbenium Iodides Dissolve Elemental Gold—Direct Access to Gold–Carbene Complexes." Chemistry - A European Journal (2019).

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