Abstract
2146 Craig The Fyamk-Condon Pvi.itci#e and 442. The Franck-Condon Principle and the Size of the Excited Benzene Molecule. By D. P. CRAIG. The Franck-Condon principle applied to the experimental intensity distribution in the 2600 -4. band system of benzene gives the value 0.037 A. for the increase in equilibrium C-