“…The development of theoretical interpretions of the photochemistry of chromium(III) complexes was initiated and stimulated by the formulation of Adamson's rules1 which set up a predictive model for photolabilization of specific ligands. Linck et al1 2 and Wrighton, Gray, and Hammond3 have extended this model by includingand -bonding strength effects and the consideration of reaction mode predictions for various excited states. Zink has extended his original ligand field theory4 to an extended Hückel MO calculation to predict relative labilization of different ligands for complexes with less than Oh symmetry.…”