Estimating the Ground and Excited State Dipole Moments of Levofloxacin and Norfloxacin Drugs Using Solvatochromic Effects and Computational Work

Table 4

Calculated value of dipole moments in Debye (D) and Onsager cavity radius (a) obtained from experimental and theoretical work for LVF and NRF.

Comp.	a^a
LVF	4.57	1.57	5.97	4.58	7.539	5.277	4.4	13.6	3.01	3.79
NRF	4.6	0.95	7.16	6.03	7.921	6.813	6.21	16.4	5.08	7.54

a. Calculated value of Onsager cavity radius in angstrom. b. Experimental value calculated by (15). c. Experimental value calculated by (16). d. Experimental value calculated from empirical solvent polarity function. e. Theoretical values obtained by employing DFT B3LYP-6-21G. f. Theoretical values obtained by employing DFT B3LYP-6-31G. . calculated from (15) and (16). h. calculated from (10). i. calculated from (20). j. Ratio of excited state and ground state dipole moment found by (17).