Evaluation of dipole moments of indole derivative (5-MPIC) by Solvatochromic shift method

The Solvatochromic technique was used to examine the solvent effects of ethyl 5-methyl-3 phenyl-1 H -indole 2-carboxylate [5-MPIC]. Different solvents were record 5-MPIC’s absorption and emission spectra at room temperature (300 K). ground state excited dipole moments estimated experimentally using Lippert’s, Bakshiev’s Kawaski Chamma Viallet’s equations. HOMO-LUMO gap MEP map also theoretically by B3LYP/6-31+G (d, p) basis set Gaussian 16 w program. Dipole states reveal a clear polarity difference between states.