The Synthesis and Characterization of the Tri-rhenium(VI) Capped Wells-Dawson Polyoxometalate, [{(C4H9)4N)5(C2H5)3NH}{Re3P2W15O62}]

Alexander M. Khenkin, Gregory Leitus, Lev Weiner, Ronny Neumann

Research output: Contribution to journalArticle

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Abstract

The tri-rhenium(VI) capped Wells-Dawson polyoxometalate, [Re3P2W15O62]6- with quaternary ammonium cations was synthesized by reacting the trivacant lacunary species, [P2W15O56]12- with [ReOCl3(PPh3)2] in an organic solvent. Elemental analysis by thermogravimetry and inductively coupled plasma mass spectroctrometry confirmed the substitution of three rhenium atoms, single-crystal X-ray diffraction as well as infra red spectroscopy showed the complete Wells-Dawson structure. The presence of all three rhenium atoms in one cap is indicated by 31P nuclear magnetic resonance spectroscopy and the electron spin resonance spectrum shows that the tri-rhenium(V) species with three unpaired electrons is low spin, S = 1/2.

Original languageEnglish
Pages (from-to)687-693
Number of pages7
JournalJournal of Cluster Science
Volume25
Issue number3
DOIs
Publication statusPublished - May 2014

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Keywords

  • Polyoxometalate
  • Rhenium
  • Tungsten
  • Wells-Dawson structure

ASJC Scopus subject areas

  • Biochemistry
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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