期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2013
卷号：2
期号：10
页码：5146
出版社：S&S Publications
摘要：The dielectric behavior of the polar binary mixture of alkyl p-hydroxy benzoates (where alkyl carbon number nvaries from 2 to 9), isopropanol for various volume fractions in nonpolar solvent benzene is studied using plunger andcavity perturbation techniques in the microwave frequency range at 10 GHz (X band), HP impedance analyzer at 1 kHz, 10kHz, 100 kHz, 1 MHz, 10 MHz and Abbe’s refractometer for optical (1015 Hz) frequency region. Hamiltonian quantummechanical calculations such as AM1, PM3 and MNDO optimized converged geometry operation is performed by usingSpartan Modeling software for both pure and binary systems of alkyl p-hydroxy benzoates and isopropanol. Dipolemoments of the binary mixtures are calculated from the dielectric data using Higasi’s method and compared with thetheoretical results. Conformational analysis of the formation of hydrogen bond between alkyl p-hydroxy benzoate andisopropanol is supported by the FT-IR spectra. The average relaxation times are calculated from their respective Cole–Coleplots.
