Professor Alwyn Davies FRS

Research Overview

Two important themes in our work are, first, the use of ESR spectroscopy to map out the electron distribution in molecules, and, second, the behaviour of metals as hydrogen equivalents. 2

Electron Spin Resonance Spectroscopy

We have used this technique to provide direct evidence for the Mills-Nixon (ring strain) effect, to establish a new homolytic mechanism for aromatic mercuration, and to determine the energy barriers for conformational change in spin-paired molecules and their corresponding radical cations and anions.

Organometallic Chemistry

We have established a series of new metalloene reactions which are equivalent to the familar hydrogen-ene reactions, and have developed the use of new organotin hydrides as radical reducing agents. 4

Selected publications

  1. A.G. Davies The Electron Paramagnetic Resonance Spectra of Organic Radical Ions. Chem. Soc. Rev., 1993 , 299-304.
  2. A.G. Davies Hydrogen-ene and metallo-ene reactions. Organic Reactivity. Physical and Biological Aspects. Ed. B.T. Golding, R.J. Griffin, and H. Maskell. Royal Society of Chemistry, Cambridge, 1995 , pp. 264-277.
  3. A.G. Davies Radical chemistry of tin Chemistry of Tin, 2nd. edn., ed. P.J. Smith, Blackie, London, 1998 , pp. 265-289.
  4. A.G. Davies The Whiffen effect of symmetry-enhanced and symmetry-forbidden hyperconjugation in spin-paired molecules. J. Chem. Soc., Perkin Trans. 2, 1999 , 2461-2468.
  5. A.G. Davies Metals as surrogates for hydrogen in organic chemistry: anything hydrogen can do, a metal can do better. J. Chem. Soc., Perkin Trans. 1, 2000 , 1997-2010.