Solvent Effects on Electronic Spectra of Some Amino Salts of d-Camphor-ß-Sulphonic Acid

Department of Post-Graduate Studies and Research in Chemistry, Rani Durgavati Vishwavidyalaya,Jabalpur

The electronic spectra of amino salts of d-camphor·$\beta$-sulphonic acid were examined in a series of solvents covering a wide range of polarity. The transisition energies (E_T) were plotted against Z-values, a solvent polarity parameter. A linear relationship was observed between transition energy and Z-value for the n$\to$$\pi$" transition. Solvent sensitivities of the amino salts have also been calculated and found to be in the increasing order as the inductive nature of the side chain increases, with the anomaly lo ammonium salt. The anomaly in ammonium salt has been explained in terms of hydrogen bonding.