Identification of the structure of the3T1g(I) ←3A2gband in the Ni(H2O)6++complex

Abstract
A detailed study of the low temperature absorption spectra of some 16 molecular crystals containing Ni(H2O)6 ++ has allowed us to identify the electronic and vibrational origins of the ‘red’ absorption band. A complete band contour analysis has been performed, which makes possible a discussion of the crossing of the 1Γ3 and 3Γ3 levels.