Experimental and theoretical evidence of the existence of gold(I)...mercury(II) interactions in solution through fluorescence-quenching measurements

  1. Lasanta, T. 1
  2. Lõpez-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

Revista:
Chemistry - A European Journal

ISSN: 0947-6539

Año de publicación: 2013

Volumen: 19

Número: 15

Páginas: 4754-4766

Tipo: Artículo

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DOI: 10.1002/CHEM.201203789 SCOPUS: 2-s2.0-84875858923 WoS: WOS:000317398300014 GOOGLE SCHOLAR lock_openAcceso abierto editor

Otras publicaciones en: Chemistry - A European Journal

Resumen

Heteronuclear complexes {[Hg(R)2][Au(R′)(PMe 3)]2}n (R=R′=C6Cl 2F3 (3); R=R′=C6F5 (4); R=C6Cl2F3, R′=C6F5 (5); R=C6F5, R′=C6Cl2F 3 (6)) were prepared by the treatment of the corresponding organomercury compounds, [Hg(C6X5)2], with two equivalents of [Au(C6X5)(PMe3)]. Their crystal structures, as determined by using X-ray diffraction methods, display Au...Hg interactions. Although only compound 4 and 5 show luminescence in the solid state, all of these compounds quench the fluorescence of naphthalene in solution. Solution studies of these derivatives suggest a cooperative effect of the gold(I) center in switching on the quenching capabilities of the [Hg(C 6X5)2] synthon with naphthalene. Theoretical studies confirmed the quenching ability of the organomercury species in the presence of gold. Goldeneye: Complexes of the type{[Hg(R)2] [Au(R′)(PMe3)]2}n (R and R′=perhalophenyl groups), with metallophilic AuI...Hg II interactions, were detected in solution by quenching experiments of arenes, which were reproduced at the theoretical level (see scheme). Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.