کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1170638 1491179 2006 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Analysis of liquid–liquid distribution constants of nonionizable crown ethers and their derivatives
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Analysis of liquid–liquid distribution constants of nonionizable crown ethers and their derivatives
چکیده انگلیسی

The linear solvation energy relationships (LSER) analysis of the distribution constants of the nonionizable crown ethers between aqueous phase and organic solvents has been carried out applying the cohesive energy density and dimensionless solvatochromic parameters of dipolarity/polarizability, hydrogen donating and accepting abilities of solvents. The molar intrinsic volume and hydrophile–lipophile balance in McGowan scale have been proposed as a descriptors of different crown ethers. The derived correlations permit to predict and/or estimate: (i) distribution constants of nonionizable crown ethers and their benzo derivatives in organic solvent/water systems; (ii) hydration number of crown ethers in the organic phase; (iii) thermodynamic functions followed the distribution of nonionizable crown ethers and their benzo derivatives in organic solvent/water systems; (iv) effect of ionic strength of the aqueous phase and properties of organic solvents on the distribution constants of dicyclohexano-18-crown-6, its alkyl derivatives and higher analogues in the two phase liquid systems.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Analytica Chimica Acta - Volume 569, Issues 1–2, 31 May 2006, Pages 119–131
نویسندگان
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