Electronic Absorption Spectra of Some Triazolopyrimidine Derivatives

Table 3

Calculated and observed band maxima, intensities, and dipole transition of 3-Acetyl-1-p-tolyl-1H-[1, 2, 4] triazolo [3, 4-b] quinazolin-5-one.

State	Theoretical					Experimental
	Configuration	Coefficient	λ, nm	𝐹	μ	Polar	Nonpolar
						λ, nm	λ, nm
I	59-60	0.813	371	0.5612	5.2449	375	376
	59–61	0.484
II	59-60	0.897	326	0.8362	4.1182	340	325
III	59–61	0.895	274	0.5813	8.5551	275	275
IV	58–61	0.556	224	0.0273	4.9168	220	225
	57–61	0.653