The trends in computed atomic charges are also more consistent with a resonance effect than an inductive effect. Assuming a resonance effect, we expect to see specific trends with decreasing σ p : increasing charge at the para-carbon and decreasing charge at the meta-and ipso-carbons. In the case of an inductive effect, we would expect the sign of the charge changes to be the same, and to decay for each atom further away from the para-carbon. Indeed, we observe the former trend in the computed atomic charges, shown on the right side of Figure . We also see a small and monotonic decrease of the charge on the P atom with decreasing σ p , but we do not see a monotonic change of the charge on the adjacent Au atoms. Since an inductive effect on the Au atom should be most directly driven by the adjacent P atom charge, we conclude that inductive effects are not primarily driving the changes in charges in this cluster.