Inorganic Poster Presentations

The Synthesis and Characterization of Sulfur Tetrafluoride Adducts and Salts

Goettel, James

  • James T. Goettel, Praveen Chaudhary, Michael Gerken*, Paul Hazendonk*
  • Organization: University of Lethbridge
  • Funding: UofL, NSERC

Abstract: Sulfur tetrafluoride can act as a Lewis acid and as a fluoride-ion donor. In the present work SF3+ salts were prepared by reacting SF4 with SbF5 and AsF6 to get SF3SbF6 and SF3AsF6, respectively. The phase behaviour of these salts was studied by variable-temperature solid-state 19F NMR and Raman spectroscopy. The solid-state 19F NMR spectrum of SF3SbF6 showed dramatic changes, especially in the SbF6- chemical shift region. These changes suggest a change in symmetry of the electron density around the Sb nucleus which was also observed in the low variable temperature Raman Spectra. Sulfur tetrafluoride, SF4, can act as a weak Lewis acid and is seen to form adducts with nitrogen containing bases such as pyridine and lutidine, while it does not form adducts with the related nitrogen-bases quinoline and isoquinoline. The SF4 adducts were identified by low-temperature Raman spectroscopy.

Synthesis and Characterization of Zirconium Complexes Supported by a Novel Monoanionic NNN-Pincer Ligand

Kamenz, Breanne

  • Breanne L. Kamenz, Kevin R. D. Johnson, Paul G. Hayes*
  • Organization: University of Lethbridge
  • Funding: UofL, NSERC

Abstract: In an effort to solicit unusual chemical structures and new types of reactivity, a novel family of monoanionic NNN pincer ligands has been prepared and utilized to support complexes of the generic form LZrX3 (X = Cl, N(SiHMe2)2). These complexes have been targeted as models for future work with thorium and uranium. Synthetic routes utilizing both salt metathesis and amine elimination will be discussed, as well as the preparation of a new tetraamido starting material, Zr(N(SiHMe2)2)4.