Estimation of ground and excited state dipole moments of quinidine and quinidine dication: Experimental and numerical methods

► Ground and excited state dipole moments have been calculated using quantum chemical calculations. ► Solvatochromic shift method is used to estimate the ground and excited state dipole moments. ► Both, experimentally and theoretically, higher values of dipole moment have been observed for excited state. ► Higher values of dipole moment are attributed to more polar excited states of molecules.