Unusual emission behaviour of some chromium(III) complexes
Abstract
Two phosphorescence bands in room temperature emission in aqueous solutions of Cr(phen)33+ and Cr(bipy)33+ are assigned origins from 2E and 2T states, the second being a “delayed phosphorescence”; a novel broad band emission from Cr(bipy)33+ in Me2SO is assigned as the first example of quartet fluorescence of a CrIII complex in solution.