Easy Ligand Activation in the Coordination Sphere of Ru inside the [PW11O39]7- Backbone

Molecules. 2020 Apr 17;25(8):1859. doi: 10.3390/molecules25081859.

Abstract

Irradiation of the Keggin-type [PW11O39{Ru(NO)}]4- (Ru-NO) polyoxometalate in CH3CN results in rapid NO ligand elimination with the formation of [PW11O39{RuIII(CH3CN)}]4- (Ru-CH3CN). This complex offers an easy entry into the Ru-based chemistry of the {PW11Ru} complex. Attempts to substitute N3- for CH3CN in the presence of an NaN3 excess lead a variety of products: (i) [PW11O39{RuIII(N3)}]4- (Ru-N3); (ii) [PW11O39{RuIII(N4HC-CH3)}]4- (Ru-Tz) as a click-reaction product; and (iii) [PW11O39{RuII(N2)}]5- (Ru-N2). UV-VIS, CV, and HR-ESI-MS techniques were used for the reaction monitoring and characterization of the products.

Keywords: CV; HR-ESI-MS; azide; polyoxometalate; ruthenium.

MeSH terms

  • Azides / chemistry
  • Coordination Complexes / chemistry*
  • Ligands*
  • Molecular Structure
  • Photoelectron Spectroscopy
  • Ruthenium / chemistry*
  • Spectrometry, Mass, Electrospray Ionization
  • Tungsten Compounds / chemistry

Substances

  • Azides
  • Coordination Complexes
  • Ligands
  • Tungsten Compounds
  • polyoxometalate I
  • Ruthenium