Abstract
The gas phase electronic absorption spectra of MnO3F and MnO3Cl have been measured in the visible and near ultraviolet regions. Interpretation has been made by comparison with a molecular calculation for each molecule by the SCF–Xα–SW method in terms of C3v symmetry. The calculated ground and excited states and observed electronic transitions correlate directly with those for the parent MnO−4 cluster. The lowest excited state, 1Ea, which correlated with the first 1T1 state of MnO−4, retains the characteristics of the parent state. The charge transfer originating from the halide atom is first observed in the 1Ec excited state in each molecule correlating with the second lowest 1T2 state in MnO−4.
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