Copper(i)-assisted red-shifted phosphorescence in Au(i)⋯Cu(i) heteropolynuclear complexes

  1. Catalano, V.J. 2
  2. López-De-Luzuriaga, J.M. 1
  3. Monge, M. 1
  4. Olmos, M.E. 1
  5. Pascual, D. 1
  1. 1 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

  2. 2 University of Nevada Reno
    info

    University of Nevada Reno

    Reno, Estados Unidos

    ROR https://ror.org/01keh0577

Revista:
Dalton Transactions

ISSN: 1477-9226

Año de publicación: 2014

Volumen: 43

Número: 43

Páginas: 16486-16497

Tipo: Artículo

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DOI: 10.1039/C4DT02154A SCOPUS: 2-s2.0-84908053244 WoS: WOS:000343961000043 GOOGLE SCHOLAR

Otras publicaciones en: Dalton Transactions

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Resumen

Reactions between [Au(C6Cl2F3)(tht)] and P,N-donor bridging ligands of the type PPh2py and (PPh2)2phen lead to the homonuclear gold complexes [Au(C6Cl2F3)(PPh2py)] (1) and [Au2(C6Cl2F3)2{(PPh2)2phen}] (2). Subsequent addition of [Cu(CH3CN)4](BF4) leads to the formation of the corresponding gold-copper heterometallic complexes [Au2Cu(C6Cl2F3)2(PPh2py)2](BF4) (3) and [Au2Cu(C6Cl2F3)2{(PPh2)2phen)}(CH3CN)](BF4) (4). The four complexes have been structurally characterized and are luminescent. The gold precursors show emissions arising from metal-perturbed intraligand transitions. The heterometallic complexes show a red shift of the emissions that is proposed to arise from an admixture of IL (intraligand) and MLCT (metal-to-ligand-charge-transfer) transitions. DFT and TD-DFT calculations agree well with these results.