Dynamical symmetry in the vibrational overtone spectrum of monofluoroacetylene (HCCF) Original Research Article

The vibrational spectrum of monofluoroacetylene (HCCF) is calculated by means of algebraic techniques under the hypothesis that it results from a U (4) symmetry through the chain U (4) ⊃ O (4) ⊃ O (3). The results are compared with the 170 experimentally available vibrational lines up to 16 000 cm−1. The mean square deviation is founded to be 6.8 cm−1, confirming our previous results and establishing this spectrum as the best example of a dynamical symmetry reported in molecular physics so far.