Issue 79, 2021

Isolation and reactivity of a gold(i) hydroxytrifluoroborate complex stabilized by anion-π+ interactions

Abstract

A 9,9-dimethylxanthene-based ligand substituted at the 4- and 5-positions by a phosphine and a xanthylium unit, respectively, has been prepared and converted into an AuCl complex, the structure of which reveals an intramolecular Au–Cl⋯π+ interaction. This new ligand platform was also found to support the formation of an unprecedented hydroxytrifluoroborate derivative featuring a “hard/soft” mismatched Au–μ(OH)–BF3 motif. Despite its surprising stability, this gold hydroxytrifluoroborate complex is a remarkably potent carbophilic catalyst which readily activates alkynes, without activator.

Graphical abstract: Isolation and reactivity of a gold(i) hydroxytrifluoroborate complex stabilized by anion-π+ interactions

Supplementary files

Article information

Article type
Communication
Submitted
28 iyl 2021
Accepted
27 avq 2021
First published
27 avq 2021

Chem. Commun., 2021,57, 10154-10157

Author version available

Isolation and reactivity of a gold(I) hydroxytrifluoroborate complex stabilized by anion-π+ interactions

J. Zhou, E. D. Litle and F. P. Gabbaï, Chem. Commun., 2021, 57, 10154 DOI: 10.1039/D1CC04105C

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