Table 3.

Wavelengths of the observed absorption maxima (λ₁, λ_2(Ch-T) and λ₃) and logarithms of the molar absorption coefficients (log ε) of compounds´ methanolic solutions (c = 3.0 × 10⁻⁵ M), which were investigated in the UV/Vis region of a spectrum.

Comp.	λ1 (nm)	log ε1	λ2(Ch-T) (nm)	1 log ε2(Ch-T)	λ3 (nm)	log ε3
8a	210	4.30	238	4.30	276	3.45
8b	210	4.31	238	4.33	276	3.40
8c	210	4.30	238	4.37	276	3.42
8d	210	4.31	238	4.32	276	3.49
8e	210	4.61	240	4.67	274	3.67
8f	208	4.59	240	4.60	274	3.60
8g	210	4.47	240	4.54	274	3.52
8h	208	4.34	240	4.42	274	3.42

¹ log ε_2(Ch-T), Logarithms of molar absorption coefficients observed at the charge-transfer absorption maximum λ_2(Ch-T) = 238–240 nm.