Author Institution: Department of Chemistry, Howard University; Department of Chemistry, Ballistic Research Laboratory; Department of Chemistry, Howard UniversityDispersed fluorescence spectra have been measured following excitation of all of the non-dissociative levels of the A1Ξ£uββ levels of ethanedinitrile C2βN2β. The spectra are characterized by long progressions in the v1β and v4β modes. The longest wavelength fluorescence terminates on ground state vibrational levels more than 14,000cmβ1 above the origin. In addition the radiative lifetimes have an inverse dependence on the amount of excitation in the v4β mode, which may indicate a crossing to high lying levels of the x1Ξ£g+β electronic state