The relative binding energies to bromide as prototypical Lewis base show a clear trend of Lewis acidity decreasing in the order 2 > 3 > 4 (see Figure 8 , bars indicating total interaction energy).
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The relative binding energies to bromide as prototypical Lewis base show a clear trend of Lewis acidity decreasing in the order 2 > 3 > 4 (see Figure 8 , bars indicating total interaction energy).