Fig. 7: Theoretical investigation of pedal motion.

a Molecular structure and b orientational disorder for N, 1-diphenylmethanimine. c Torsional angle potential energy profile along the dihedral angles C(2)-C(1)-N(7)-C(8) and d the two typical conformers (1 and 2) and transition state (3). e The calculated infrared absorption frequencies of 1, 2, and 3.