Dielectric relaxation dynamics and hydrogen bonding interactions reveal the molecular association mechanisms in binary mixtures of 3-chloroaniline and 1-methoxy-2-propanol at 298 K

The complex dielectric spectra of binary mixtures of 3-chloroaniline (3-CA) and 1-methoxy-2-propanol (PGME) were measured at 298 K over a frequency range from 10 MHz to 30 GHz for eleven different volume compositions. The dielectric parameters, namely the complex dielectric permittivity spectra (ε′) and complex dielectric loss spectra (ε″), were analyzed using the Havriliak-Negami model, which revealed Cole-Davidson-type relaxation. The static dielectric constant (ε0) and relaxation time (τ) were determined. The dielectric response of all samples at 298 K was satisfactorily explained by a single relaxation mechanism. Additionally, the effective Kirkwood correlation factor (