Tetranuclear (Phosphane)(thiolato)gold(I) Complexes: Synthesis, Characterization and Photoluminescent Properties

  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. Puelles, R.C. 1
  8. Sánchez-Forcada, E. 1
  1. 1 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

  2. 2 Universidad de Zaragoza
    info

    Universidad de Zaragoza

    Zaragoza, España

    ROR https://ror.org/012a91z28

Revista:
European Journal of Inorganic Chemistry

ISSN: 1434-1948

Año de publicación: 2007

Volumen: 25

Páginas: 4001-4005

Tipo: Artículo

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DOI: 10.1002/EJIC.200700529 SCOPUS: 2-s2.0-34548628393 WoS: WOS:000249362800009 GOOGLE SCHOLAR

Otras publicaciones en: European Journal of Inorganic Chemistry

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Resumen

The reactions of the tetraphosphane donor ligand (Ph2PCH 2)2NCH2CH2N(CH2PPh 2)2 with the gold precursors [AuCl(tht)] or [Au(C 6F5)(tht)] (tht = tetrahydrothiophene) leads to complexes [Au4R4{(Ph2PCH2)2NCH 2CH2N(CH2PPh2)2}] [R = Cl (1) or C6F5 (2)]. Further substitution of the chlorine atoms in 1 by the corresponding 4-substituted benzenethiolates gives rise to the tetranuclear (phosphane)fthiolato)gold(I) complexes [Au4(S-C 6H4-X)4{(Ph2PCH2) 2NCH2CH2N(CH2PPh2) 2}] [X = F (3), MeO (4), Me (5) and NO2 (6)]. Complexes 2 and 4 were characterized by X-ray diffraction studies showing Au-Au interactions in the case of complex 4. Complexes 3-6 display intense emissions in the solid state at 77 K with lifetimes in the microsecond range. The observed phosphorescent emissions are attributed to metal-to-ligand charge-transfer transitions. Nevertheless, the influence in the emission energies of gold-gold interactions or the contribution of the substituent in the 4-position of the benzenethiolate ring to the excited state cannot be neglected. © Wiley-VCH Verlag GmbH & Co. KGaA, 2007.