Luminescent nido-carborane-diphosphines [(PR2)2C2B9H10]‑1 (R = Ph, iPr). Modification of their luminescent properties upon formation of three-coordinate gold(I) complexes

  1. Crespo, O. 2
  2. Gimeno, M.C. 2
  3. Jones, P.G. 4
  4. Laguna, A. 2
  5. López-de-Luzuriaga, J.Ma. 1
  6. Monge, M. 1
  7. Pérez, J.L. 3
  8. Ramón, M.A. 3
  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

  3. 3 Universidad de Zaragoza
    info

    Universidad de Zaragoza

    Zaragoza, España

    ROR https://ror.org/012a91z28

  4. 4 Braunschweig University of Technology
    info

    Braunschweig University of Technology

    Brunswick, Alemania

    ROR https://ror.org/010nsgg66

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Revista:
Inorganic Chemistry

ISSN: 0020-1669

Año de publicación: 2003

Volumen: 42

Número: 6

Páginas: 2061-2068

Tipo: Artículo

DOI: 10.1021/IC0259843 SCOPUS: 2-s2.0-0037464326 WoS: WOS:000181676500035 GOOGLE SCHOLAR

Otras publicaciones en: Inorganic Chemistry

Repositorio institucional: lock_openAcceso abierto Editor

Resumen

The free nido-diphosphine anions [(PR2)2C2B9 H10]- R = Ph, iPr) show luminescence properties whereas the closodiphosphines [(PR2)2C2B10H10] do not. Four families of three-coordinate complexes of stoichiometry [Au- {(PR2)2C2B10H10}L]OTf (L = tertiary phosphine) and [Au{(PR2)2C2B9H10}L] have been studied in order to analyze the influence of the closo- or nido-nature of the diphosphine, the monophosphine coordinated to gold and the substituent at the diphosphine on the luminescence of the complexes. Only the nido-derivatives show luminescence. The maxima of the emissions are shifted to lower energies than those of the corresponding free nido-diphosphines. When the substituent at the diphosphine is phenyl, a new emission appears, which has been assigned as arising from a metal to ligand charge transfer [Au→π*(L)] excited state.