Abstract
Dispersed fluorescence studies of AlNi, NiAu, and PtCu have been performed, providing spectroscopic information about the ground and low-lying excited electronic states. Vibrational frequencies are reported for the ground X 2Δ5/2 state of all three molecules. In the case of AlNi, fluorescence to all five of the states originating from the 3dNi93sAl2σ2 manifold has been observed. For both NiAu and PtCu, fluorescence to two low-lying excited states in addition to the ground state was observed. Relative energies, vibrational constants, and, when possible, Ω values of these states are reported. Comparisons of the measured electronic states to the predictions of a ligand-field plus spin–orbit model are also provided, along with a comparison of the electronic structure of PtCu to that of PtH.
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