Assessment of Dielectric Parameters of Hydrogen Bonded Complexes: Tri-n-butyl Phosphate (TBP) with Aliphatic Alcohols Using Huysken–Craco, Palit and Onsager’s Methods

This chapter investigates the complex formation of TBP in long chain alcohols viz., 1-hexanol, 1-heptanol, 1-octanol by following Huysken-Craco method, Palit method and Onsager method. Dielectric studies of hydrogen-bonded compounds in non-polar solvents reveal vital details on the development of intermolecular complexes in solution. Hydrogen bonds are a fascinating type of molecular interaction that is essential in a variety of fields, including pharmacology, chemistry, and molecular biology. The mechanism of dipolar complexation involving TBP and three alcohols namely 1-hexanol, 1-heptanol, 1-octanol and in an apolar medium benzene, is investigated by three direct methods viz. Huysken–Craco, Palit and Onsager’s Methods using dielectric measurement data at frequency 455kHz and at temperature 303.16 K. The interaction dipole moment, induced polarisation, and apparent complex formation constant for the thermodynamically preferred stoichiometry of 1:1 complex are the parameters assessed in these systems. It is concluded that the complexation is predominantly due to polarization effect involving charge redistribution and the complex formation is most favoured in 1-hexanol system.