Nk. Ray et Rc. Rastogi, ACTIVATION HARDNESS AND SIGMATROPIC SHIFTS, Indian journal of chemistry. Sect. A: Inorganic, physical, theoretical & analytical, 32(11), 1993, pp. 927-929
Modes of sigmatropic shifts have been examined from a consideration of
the hardness parameters of the transition states. The results obtaine
d are in agreement with the well known Woodward-Hoffmann rules. Change
in chemical potential has also been examined for the reaction path.