Floppy Molecules

Potential and kinetic interaction of two internal tops in molecules belonging to C2v(M) molecular symmetry group

“…Internal rotation in molecules (one of the types of large amplitude motion (LAM)) continues to attract the attention of researchers today [1][2][3][4][5][6][7]. This is due to the important role that internal rotation plays in determining the thermodynamic properties of molecules [1], as well as in the formation of the fine structure of rotational and vibrational-rotational absorption bands [8][9][10]. Although early works addressed only molecules with a single internal top [11][12][13][14][15], research soon expanded to molecules with two or more internal tops.…”