Gold(I) Pyrazolate Clusters: The Structure and Luminescence of the Tetranuclear, Base-Stabilized [(dppm)2Au4(3,5-Ph2Pz)2](NO3)2·H2O

  1. Mohamed, A.A. 2
  2. López-De-Luzuriaga, J.M. 1
  3. Fackler Jr. 2
  1. 1 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

  2. 2 Texas A&M University
    info

    Texas A&M University

    College Station, Estados Unidos

    ROR https://ror.org/01f5ytq51

Revista:
Journal of Cluster Science

ISSN: 1040-7278

Any de publicació: 2003

Volum: 14

Número: 1

Pàgines: 61-70

Tipus: Article

DOI: 10.1023/A:1022953508463 SCOPUS: 2-s2.0-0344260457 WoS: WOS:000181822200006 GOOGLE SCHOLAR

Altres publicacions en: Journal of Cluster Science

Repositori institucional: lock_openAccés obert Editor

Resum

The tetranuclear Au(I) pyrazolate complex, [(dppm)2Au 4(3,5-Ph2Pz)2](NO3) 2· H2O, 1, has been synthesized and structurally characterized. It is the first tetranuclear pyrazolate of Au(I) to have been found, although the trinuclear pyrazolates of Au(I) are well known. Complex 1 exhibits luminescence at 77 K when excited at 333 nm with an emission maximum at 454 nm. The emission has been assigned to ligand to metal charge transfer, LMCT, based upon the vibronic structure that is observed. The complex crystallizes in the monoclinic space group P21/c, with a = 19.33(3) Å, b = 20.26(3) Å, c = 19.80(3) Å, β = 106.74(2)°, V = 7425(17) Å3, Z = 8, and R = 0.058. The Au⋯Au distances are Au(1)⋯Au(4) = 3.185(3) Å, Au(1)⋯Au(2) = 3.230(3) Å, Au(2)⋯Au(3) = 3.079(3) Å, and Au(3)⋯Au(4) = 3.280(3) Å.