Figure 3.
Gaussian 4 calculated relative thermodynamic stabilities of radicals after an electron addition to 5-Brcyt. The G4(PCM) free energy of Br− was added to the free energy of debrominated-radicals (IIa – IV) for the calculation of the relative stabilities with respect to 5-Brcyt radical anion. Relative free energies in kcal/mol are shown below each figure. For neutral 5-Brcyt LUMO (lowest unoccupied molecular orbital) is shown which is available for electron attachment. On anion surface, SOMO (singly occupied molecular orbital) is shown.