Van der Waals bond lengths and electronic spectral shifts of the benzene---Kr and benzene---Xe complexes

Rotationally resolved UV-spectra are presented for the 610 bands of
benzene---Kr and benzene---Xe complexes yielding precise rotational
constants and van der Waals bond lengths for the ground and excited
vibronic state, and electronic band shifts. These value complement
the previously published data for the other rare gases and the
various quantities have now been determined for all the
benzene—rare gas complexes. Measured values of the bond length were
used to calculate the band shifts from recent theoretical
predictions. They are compared with the experimental values of this
work.