Loading...

Synthesis and structure of the cyclometalated hetero-binuclear Pt-Au complexes with bridging 2-diphenylphosphinopyridine ligand

Karimi, M. J ; Sharif University of Technology | 2015

807 Viewed
  1. Type of Document: Article
  2. DOI: 10.1016/j.jorganchem.2015.02.043
  3. Publisher: Elsevier , 2015
  4. Abstract:
  5. The heterobinuclear cyclometalated PtII-AuI complexes of the type [MePt(bhq)(μ-dppy)AuL]PF6, in which, bhq = benzo{h}quinoline, dppy = 2-diphenylphosphinopyridine, L = PPh3, 5; PPh2Me, 6; PPhMe2, 7; have been prepared by reaction of the mononuclear platinum(II) complex [MePt(bhq)(dppy)], 1, with 1 equiv. [AuL]+. Also, the reaction of complex 1 with 1 equiv AuCl(SMe2) at -60 °C gave the neutral heterobinuclear complex [MePt(bhq)(μ-dppy)AuCl], 8. All of the complexes were characterized using NMR spectroscopy and elemental microanalysis and complexes 5 and 8 were further identified by single crystal X-ray structure determination. Time-dependent density functional theory (TD-DFT) is used to elucidate the origin of the electronic transitions in the heteronuclear complexes5 and 8. The low energy absorptions for the heterobinuclear complex 5 are attributed to an admixture of ligand-to-ligand charge transfer (1LL′CT) and metal-to-ligand charge transfer character (1MLCT)
  6. Keywords:
  7. Complex ; Synthesis ; Charge transfer ; Chelation ; Crystal structure ; Density functional theory ; Gold ; Gold compounds ; Ligands ; Nuclear magnetic resonance spectroscopy ; Platinum ; Single crystals ; 2-Diphenylphosphinopyridine ; Complex ; Cyclometalated ; Elemental microanalysis ; Heterobinuclear complexes ; Metal to ligand charge transfers ; Single crystal x-ray structures ; Time dependent density functional theory ; Synthesis (chemical)
  8. Source: Journal of Organometallic Chemistry ; Volume 786 , 2015 , Pages 14-20 ; 0022328X (ISSN)
  9. URL: https://www.deepdyve.com/lp/elsevier/synthesis-and-structure-of-the-cyclometalated-hetero-binuclear-pt-au-1BV3Gu4wGT