Dinuclear N-heterocyclic carbene silver complexes: Synthesis, luminescence and catalytic studies

DEMİR ATLI D., GÜLLE S.

Journal of Molecular Structure, vol.1179, pp.576-580, 2019 (SCI-Expanded, Scopus) identifier

  • Publication Type: Article / Article
  • Volume: 1179
  • Publication Date: 2019
  • Doi Number: 10.1016/j.molstruc.2018.11.053
  • Journal Name: Journal of Molecular Structure
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.576-580
  • Keywords: Coupling reaction, Luminescence, N-heterocyclic carbene, Silver
  • Manisa Celal Bayar University Affiliated: Yes

Abstract

A new dibenzimidazole compound (1) and three dibenzimidazolium salts (2a-2c) were prepared. Reactions of these salts with silver(I) oxide in methanol led to dinuclear N-heterocyclic carbene silver complexes (3a-3c). All of the compounds were characterized by 1H NMR, 13C NMR and elemental analyses. Molecular weights of the silver complexes were confirmed by MALDI-TOF mass spectrometry. Preliminary catalytic studies using all the silver complexes were performed on three-component coupling reaction of p-formaldehyde, piperidine and phenylacetylene. Complexes 3a and 3c exhibited good catalytic activities under neat conditions. The silver complexes showed luminescence properties in CH3CN at room temperature.