Dielectrics relaxation studies of acrylamide and acetanilide with halogenated phenols in benzene

At 308 K, using a 9.37 GHz dielectric relaxation setup, dielectric investigations of H-bonded formations of Acrylamide and Acetanilide with 4-bromophenol, 4-chlorophenol, 4-iodophenol and 4-fluorophenol in benzene were performed. Various parameters of dielectric like (ε׳), (ε״), (ε0) and (ε∞) have been tested. The group rotation relaxation time τ(2) is a function of the steric interactions of the proton donor, while the significance of Higasi et al single frequency equation used for few relaxation times τ(1) is creates towards a role of the hydrogen bonding power of the phenolic hydrogen. The fact that the relaxation time and molar free energy activation of the 1:1 molar ratio are bigger than those of additional superior molar ratios (i.e. 3:1, 2:1, 1:2, 1:3) confirms the presence of a 1:1 complex structure among the considered structures, as well as a complex formation in the middle of the -OH group of phenols and the C=O group of amides.