MATRIX STUDIES OF THE B2A2'-]X2E'' TRANSITION OF THE SYM-C6CL3F3+ RADICAL CATION

The laser induced fluorescence spectra of the sym-C6Cl 3F3+ radical cation were observed and analyzed. The cations are generated in rare gas matrices by VUV photoionization of the parent halobenzene. They fluoresce in solid Ne and Ar with near unity quantum efficiency and exhibit a well resolved vibronic structure. A radiative lifetime of 29±5 nsec is found for the emission in Ne host. Both the totally symmetric a1 and degenerate e′ modes are active in the spectrum. Analysis of the ground state vibrational structure yields the Jahn-Teller distortion parameters for several e′ vibration modes. © 1979 American Institute of Physics.