1,2-Dibromo- and 1,2-Diiodotetrafluorobenzene as Precursors of Anionic Homo- and Heterometallic Gold Complexes

  1. Fernández, E.J. 1
  2. Laguna, A. 2
  3. Lasanta, T. 1
  4. López-de-Luzuriaga, J.M. 1
  5. Montiel, M. 1
  6. Olmos, M.E. 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

Journal:
Organometallics

ISSN: 0276-7333

Year of publication: 2008

Volume: 27

Issue: 13

Pages: 2971-2979

Type: Article

DOI: 10.1021/OM8000586 SCOPUS: 2-s2.0-47949100694 WoS: WOS:000257448500017 GOOGLE SCHOLAR

More publications in: Organometallics

Metrics

Cited by

  • Scopus Cited by: 23 (12-01-2023)
  • Web of Science Cited by: 21 (06-02-2023)

JCR (Journal Impact Factor)

  • Year 2008
  • Journal Impact Factor: 3.815
  • Journal Impact Factor without self cites: 2.801
  • Article influence score: 0.889
  • Best Quartile: Q1
  • Area: CHEMISTRY, INORGANIC & NUCLEAR Quartile: Q1 Rank in area: 5/43 (Ranking edition: SCIE)
  • Area: CHEMISTRY, ORGANIC Quartile: Q1 Rank in area: 8/55 (Ranking edition: SCIE)

SCImago Journal Rank

  • Year 2008
  • SJR Journal Impact: 2.288
  • Best Quartile: Q1
  • Area: Inorganic Chemistry Quartile: Q1 Rank in area: 5/70
  • Area: Physical and Theoretical Chemistry Quartile: Q1 Rank in area: 11/165
  • Area: Organic Chemistry Quartile: Q1 Rank in area: 13/164

Abstract

By reaction of LiR and [AuCl(tht)] the new organometallic compounds NBu4[AuR2] (R = 2-C6BrF4 (1), 2-C6F4I (2)) have been prepared. They react with TlPF 6 in different molar ratios yielding anionic extended chains with the stoichiometrics {NBu4[Tl2(AuR2) 3]}n, (R = 2-C6BrF4 (3), 2-C 6F4I (4)) and {NBu4[Tl(AuR2) 2]}n (R = 2-C6BrF4 (5), 2-C 6F4I (6)). The crystal structures of 3 and 4 consist of anionic chains formed by association of loosely bound Au2Tl 2 clusters interconnected by [AuR2]- anions via unsupported Au⋯Tl interactions, while 5 shows infinite polymetallic Au/Tl chains with an additional [AuR2]- fragment bonded to each TlI via unsupported Au⋯Tl contacts. The heterometallic bromotetrafluorophenyl complexes 3 and 5 display luminescence in the solid state, which is assigned to excited states that appear as result of the interactions between the metal centers. At 77 K different emissions appear in glassy solutions, which are assigned to the presence of oligomers of different length. In the case of the iodotetrafluorophenyl derivatives, in spite of presenting similar structures, complex 4 is weakly luminescent and complex 6 is nonluminescent both in the solid state at room temperature and at 77 K and in glassy solutions. This result is probably a consequence of the heavy-atom effect (HAE) due to the presence of iodine instead of bromine, which in the case of complex 4 provokes a reduction of the intensity if compared with its homologous compound 3 and which in 6 leads to the total quenching of the emission. ©2008 American Chemical Society.