Article Dans Une Revue Organometallics Année : 2015

Coordination of a Triphosphine–Silane to Gold: Formation of a Trigonal Pyramidal Complex Featuring Au + →Si Interaction

Résumé

Coordination of the triphosphine–fluorosilane [o-(iPr2P)C6H4]3SiF to AuCl results in the formation of a trigonal pyramidal cationic complex. Though cationic, the gold center acts as a Lewis base and is engaged in significant Au→Si interaction, as substantiated by X-ray diffraction and NMR spectroscopy. In solution, the P,P,P,Si tetracoordinate cationic complex coexists with a neutral P,P,Cl tricoordinate form, with a pendant phosphine buttress and without Au→Si interaction. The bonding situation in the two isomeric forms has been assessed by DFT calculations. Coordination of the third phosphine arm is shown to induce cationization and to play a key role in the presence of the Au→Si interaction.

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Dates et versions

hal-01969121 , version 1 (03-01-2019)

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  • HAL Id : hal-01969121 , version 1

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Pauline Gualco, Sonia Mallet-Ladeira, Hajime Kameo, Hiroshi Nakazawa, Maxime Mercy, et al.. Coordination of a Triphosphine–Silane to Gold: Formation of a Trigonal Pyramidal Complex Featuring Au + →Si Interaction. Organometallics, 2015, 34 (8), pp.1449-1453. ⟨hal-01969121⟩
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