Symmetry of Internal Dynamics and Separation of Motions in the Major Isomer of the LiReO_(4) Molecule

摘要

The internal dynamics of the major isomer of the LiReO_(4) molecule, with account taken of the torsional transitions of the Li~(+) cation between its six energetically equivalent equilibrium positions relative to the ReO_(4)~(-) anion, is analyzed in terms of symmetry-group chain methods. On this basis, the problem of separation of torsional and rotational motions, which is a nontrivial problem in this case, is solved and a rigorous model for the description of the energy spectrum in an arbitrary vibronic state is constructed.