paramagnetic species in equilibrium



Dear All:
 I am looking for examples (or references to) of chemical equilibria
 involving diamagnetic and (in the same system) paramagnetic species that can
 be either the isomers (ground states & intermediates) or transition states
 connecting them. Thank you in advance,
 Dmitri
 Dmitri G. Gusev
 Associate Professor
 Department of Chemistry
 Wilfrid Laurier University
 Waterloo, Ontario
 N2L 3C5 Canada
 Tel.: (519) 884-1970, 2736
 FAX: (519) 746-0677
 e-mail: dgoussev' at \`wlu.ca