Peculiarities of molecular light scattering in a chlorobenzene—o-dichlorobenzene system and their relationship to the solution structureстатья
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Дата последнего поиска статьи во внешних источниках: 23 ноября 2017 г.
Аннотация:The general coefficient of molecular light scattering (R0), degree of depolarization (delta U),
and refractive index (n) in a system of o-dichlorobenzene—chlorobenzene solutions were
measured. The anisotropic (Ran) and isotropic (Ris) contributions to scattering and the isothermal compressibility and its excess component were calculated. A complicated nonmonotonic behavior was found for the concentration dependences of the coefficients of molecular
light scattering with a minimum in a range of low concentrations from the side of chlorobenzene and a maximum from the side of o-dichlorobenzene, indicating a substantial rearrangement of the structure of the solutions with a change in the concentration. An analysis of the
concentration dependences of the coefficients of molecular light scattering, excess isothermal compressibility, and excess molar volume revealed four ranges differed in structure:
0—0.03, 0.03—0.65, 0.65—0.9, and 0.9—1.0. The solution structure was described in
each range.