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We extract the dynamics implicit in an algebraic fitted model Hamiltonian forthe hydrogen chromophore's vibrational motion in the molecule $CF_3CHFI$. Theoriginal model has 4 degrees of freedom, three positions and one representinginterbond couplings. A conserved polyad allows the reduction to 3 degrees offreedom. For most quantum states we can identify the underlying motion thatwhen quantized gives the said state. Most of the classifications,identifications and assignments are done by visual inspection of the alreadyavailable wave function semiclassically transformed from the numberrepresentation to a representation on the reduced dimension toroidalconfiguration space corresponding to the classical action and angle variables.The concentration of the wave function density to lower dimensional subsetscentered on idealized simple lower dimensional organizing structures and thebehavior of the phase along such organizing centers already reveals the atomicmotion. Extremely little computational work is needed.Comment: 27 pages, 5 figures, submitted to Physical Chemistry Chemical Physic

Analysis of an algebraic model for the chromophore vibrations of CF3CHFI