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Dielectric studies on binary mixtures containing 4‐trans‐4′ ‐n‐hexyl‐cyclohexyl‐isothiocyanato‐benzene
Author(s) -
Raszewski Z.,
Dąbrowski R.,
Stolarzowa Z.,
Zmija J.
Publication year - 1987
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170220619
Subject(s) - dielectric , additive function , chemistry , dipole , benzene , molecule , phase (matter) , benzene derivatives , binary number , analytical chemistry (journal) , thermodynamics , computational chemistry , organic chemistry , materials science , mathematical analysis , biochemistry , mathematics , optoelectronics , arithmetic , chemical synthesis , in vitro , physics
We have studied binary mixtures with an induced smectic phase of 4‐trans‐4′ ‐n‐hexylcycohexyl isothiocyanatobenzene (6CHBT) with 4‐n‐ethyl‐4′‐pentylazoxybenzene (EPAB) by means of dielectric, microscopic and refractometric measurements. The effective values of components p ⟂ and p ∥ of the dipole moment per one molecule of the mixture have been calculated from values of ϵ ⟂ and ϵ ∥. As a result of our studies, we have established that the heterocomplexes formed in the mixture are so weak that they do not cause any essential changes in the distribution of molecule charges. The observed deviations from additivity of the dielectric constant of the mixture are caused solely by a non‐additive behavior of the mixture density.