Photophysical and Theoretical Studies on Luminescent Tetranuclear Coinage Metal Building Blocks

  1. Fernández, E.J. 1
  2. Laguna, A. 2
  3. López-De-Luzuriaga, J.M. 1
  4. Monge, M. 1
  5. Montiel, M. 1
  6. Olmos, M.E. 1
  7. Rodríguez-Castillo, M. 1
  1. 1 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

  2. 2 Instituto de Nanociencia y Materiales de Aragón
    info

    Instituto de Nanociencia y Materiales de Aragón

    Zaragoza, España

    ROR https://ror.org/031n2c920

Zeitschrift:
Organometallics

ISSN: 0276-7333

Datum der Publikation: 2006

Ausgabe: 25

Nummer: 15

Seiten: 3639-3646

Art: Artikel

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DOI: 10.1021/OM060181Z SCOPUS: 2-s2.0-33746348314 WoS: WOS:000238848600021 GOOGLE SCHOLAR

Andere Publikationen in: Organometallics

Projekte im Zusammenhang

SINTESIS DE COMPUESTOS DE ORO DIRIGIDA A LA PREPARACION DE PRODUCTOS CON NUEVAS APLICACIONES

2004/00087/001

Zusammenfassung

The synthesis, structural characterization, and the study of the photophysical properties of complexes [Au2Ag2(C 6F5)4(N≡CCH3) 2]n (1) and [Au2Cu2(C 6F5)4(N≡CCH3) 2]n (2) have been carried out. The crystal structure of both complexes consists of polymeric chains formed by repetition of Au 2Ag2 or Au2Cu2 units built up by metallophilic Au(I)⋯M(I) interactions that are linked through Au(I)⋯Au(I) interactions. Complexes 1 and 2 are brightly luminescent in the solid state at room temperature and at 77 K with lifetimes in the nanosecond range. Both compounds 1 and 2 undergo oligomerization in solution, as observed through UV-vis and excitation spectra in acetonitrile solutions at high concentrations. Thus, a correlation between the excitation spectra in solution at different concentrations and the absorption spectra in the solid state for complex 1 can be established. Time-dependent DFT calculations agree well with the experimental results and support the idea of that the origin of the luminescence of these complexes arises from orbitals located in the tetranuclear Au2M2 units. © 2006 American Chemical Society.