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

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autorinnen und Autoren: Holthoff JM, Engelage E, Kowsari AB, Huber SM, Weiss R
Zeitschrift: Chemistry - A European Journal
Jahr der Veröffentlichung: 2019
ISSN: 0947-6539
eISSN: 1521-3765


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
]
+
.


Einrichtungen weiterer Autorinnen und Autoren

Argonne National Laboratory


Zitierweisen

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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