Ultraviolet Spectrum of Dibenzene Chromium Vapor

摘要

The ultraviolet spectrum of dibenzene chromium vapor has been observed under medium resolution conditions. At least three separate band systems are found, at least two of which display progressions of the totally symmetric vibration frequencies. Possible assignments are considered and compared with alternative level structures. It is concluded that the 3de2ulevel probably lies below the metala1gorbital, and that term splitting may play a considerable role in determining the order of the excited states.