Back to Search
Start Over
Dinuclear Au(I), Au(II) and Au(III) Complexes with (CF 2 ) n Chains: Insights into The Role of Aurophilic Interactions in the Au(I) Oxidation
- Source :
- Chemistry – A European Journal. 27:15815-15822
- Publication Year :
- 2021
- Publisher :
- Wiley, 2021.
-
Abstract
- New dinuclear Au(I), Au(II) and Au(III) complexes containing (CF2 )n bridging chains were obtained. Metallomacrocycles [Au2 {μ-(CF2 )4 }{μ-diphosphine}] show an uncommon figure-eight structure, the helicity inversion barrier of which is influenced by aurophilic interactions and steric constraints imposed by the diphosphine. Halogenation of LAu(CF2 )4 AuL (L=PPh3 , PMe3 , (dppf)1/2 , (binap)1/2 ) gave [Au(II)]2 species, some of which display unprecedented folded structures with Au-Au bonds. Aurophilic interactions facilitate this oxidation process by preorganizing the starting [Au(I)]2 complexes and lowering its redox potential. The obtained [Au(II)]2 complexes undergo thermal or photochemical elimination of R3 PAuX to give Au(III) perfluorinated auracycles. Evidence of a radical mechanism for these decomposition reactions was obtained.
Details
- ISSN :
- 15213765 and 09476539
- Volume :
- 27
- Database :
- OpenAIRE
- Journal :
- Chemistry – A European Journal
- Accession number :
- edsair.doi...........79034505fcbcd098db171b4c7655035d