Three-coordinate gold(i) N-heterocyclic carbene complexes: A new class of strongly luminescent derivatives

  1. Visbal, R. 1
  2. López-De-Luzuriaga, J.M. 2
  3. Laguna, A. 1
  4. Gimeno, M.C. 1
  1. 1 Universidad de Zaragoza
    info

    Universidad de Zaragoza

    Zaragoza, España

    ROR https://ror.org/012a91z28

  2. 2 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

Revista:
Dalton Transactions

ISSN: 1477-9226

Ano de publicación: 2014

Volume: 43

Número: 1

Páxinas: 328-334

Tipo: Artigo

DOI: 10.1039/C3DT52146J SCOPUS: 2-s2.0-84889689071 WoS: WOS:000327665200042 GOOGLE SCHOLAR lock_openAcceso aberto editor

Outras publicacións en: Dalton Transactions

Resumo

A selected group of cationic three-coordinate Au(i)-NHC complexes of the form [Au(NHC)(dppbz)]OTf have been prepared from a commercially available bidentate phosphine. All complexes have been fully characterised by NMR and mass spectroscopy. The [Au(NHC)]+ fragment shows a pronounced tendency to form linear complexes which is confirmed by the molecular structure of [Au(IPr)(dppbz)]OTf in the solid state. The complexes are brightly luminescent and present very high quantum yield values in the solid state. The assignments of the electronic transitions involved in the emissions are of a phosphorescent nature and it is proposed that the origin of the emissions is derived from the ligand (dppbz) to metal-ligand (Au-NHC) charge-transfer (LML′CT) transition. © 2014 The Royal Society of Chemistry.