Table 7 B3LYP/6-311++G(d,p) wavelength, excitation energies, and the oscillator strengths for FPT

S1

265.61

4.668

0.0383

H-2 → L + 0(7%), H-0 → L + 0(27%), H-0 → L + 1(62%)

S2

257.41

4.817

0.2603

H-2 → L + 0(3%), H-0 → L + 0(68%), H-0 → L + 1(24%)

S3

243.84

5.985

0.0002

H-1 → L + 0(50%), H-0 → L + 2(45%)

S4

231.98

5.345

0.0070

H-1 → L + 0(5%), H-0 → L + 2(3%), H-0 → L + 3(78%)

H-0 → L + 4(8%)

S5

229.23

5.409

0.0104

H-2 → L + 0(8%), H-1 → L + 1(81%), H-0 → L + 3(4%)