Dinuclear dicationic gold complexes containing amide-functionalized bis(NHC) ligands exhibit aurophilic interactions in the presence of halogen counterions, as shown in compounds 5 and 6. DFT calculations confirmed the stability of these geometries and predicted longer gold•••gold distances in the absence of halogen anions. This was confirmed by employing a “non-interactive” anion like tetraphenylborate in complex 8. Both types of complexes were unambiguously characterized by X-ray analysis. Furthermore, only complexes 5 and 6 containing the halogen anions are luminescent in the solid state and in a water matrix at 77 K.

Amide Functionalized Bis(NHC) Systems - Anion Effect on Gold-Gold Interactions

CERONI, PAOLA;BERGAMINI, GIACOMO;
2012

Abstract

Dinuclear dicationic gold complexes containing amide-functionalized bis(NHC) ligands exhibit aurophilic interactions in the presence of halogen counterions, as shown in compounds 5 and 6. DFT calculations confirmed the stability of these geometries and predicted longer gold•••gold distances in the absence of halogen anions. This was confirmed by employing a “non-interactive” anion like tetraphenylborate in complex 8. Both types of complexes were unambiguously characterized by X-ray analysis. Furthermore, only complexes 5 and 6 containing the halogen anions are luminescent in the solid state and in a water matrix at 77 K.
C. Hemmert; R. Poteau; F. J.-B. dit Dominique; P. Ceroni; G. Bergamini; H. Gornitzka
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/129673
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 22
  • ???jsp.display-item.citation.isi??? 22
social impact