The ratio of the intensity between the low-energy and medium-energy bands (Table ) trends very well with the ratio of the calculated oscillator strengths between the transitions to the S1 and S2 states (Table . Specifically, fS1 and εabs,1 are both less intense than fS2 and εabs,2 in 4NICz and 7NICz, but fS1 and εabs,1 are more intense than fS2 and εabs,2 in 5NICz, 6NICz, and 6,10NICz. Considering this, and that the calculated S2 energies are predicted to be invariant with molecular structure, we assign this medium energy-band to a transition to S2.