The overtone spectrum of monochloroacetylene (HCCCl) in the algebraic approach Original Research Article

The vibrational spectrum of monochloroacetylene (HCCCl) is calculated by algebraic techniques under the hypothesis that there is an underlying dynamical U(4) symmetry with the chain of subalgebras U(4)⊃O(4)⊃O(3). The results are compared with the 24 experimentally available vibrational lines and the mean square deviation is found to be 4 cm−1.