Evidence for Genuine Hydrogen Bonding in Gold(I) Complexes
Résumé
The ability of gold to act as proton acceptor and participate in hydrogen bonding remains an open question. Here we report the synthesis and characterization of cationic gold(I) complexes featuring ditopic phosphine-ammonium (P,NH +) ligands. Besides the presence of short Au•••H contacts in the solid state, the presence of Au•••H-N hydrogen bonds has been inferred by NMR and IR spectroscopies. The bonding situation has been extensively analysed computationally. All features are consistent with the presence of 3-center 4-electron attractive interactions combining electrostatic and orbital components. The role of relativistic effects has been examined and the analysis has been extended to other recently described gold(I) complexes.
Domaines
Chimie| Origine | Fichiers produits par l'(les) auteur(s) |
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