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The dielectric behaviour of glycine and glycylglycine in aqueous solution was examined for low concentrations and in the range of MHz, at 273 to 313 K. Only the solutions of glycylglycine exhibit dielectric absorption in the range 7.05 × 10 8  to 1.6 × 10 9 Hz. The dielectric absorption was attributed to the relaxation of glycylglycine molecules rotating with one or two molecules of water. The charge separation of the dipolar ion in solution was found to be 5.7 Å, the molecular radius 3 Å and the activation energy for the relaxation process 4 kcal/mole.

Dielectric Behaviour of Glycine and Glycylglycine in Water in the Range of MHz