کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9588556 | 1393504 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Volumetric properties of tetraphenylporphyrin and some of its alkoxy and tert-butyl derivatives in tetrachloromethane solutions
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Volumetric properties of tetraphenylporphyrin and some of its alkoxy and tert-butyl derivatives in tetrachloromethane solutions Volumetric properties of tetraphenylporphyrin and some of its alkoxy and tert-butyl derivatives in tetrachloromethane solutions](/preview/png/9588556.png)
چکیده انگلیسی
Densities, apparent molar volumes, and partial molar volumes, V20, of tetraphenylporphyrin, H2TPP; meso-tetra-4-alkoxyphenyl porphyrin derivatives, H2T(4-OCnH2n+1)PP (where n=4, 6, 8, 10, 12, 16); meso-tetra-4-tert-butylphenyl porphyrin, H2T(4-tBu)PP; meso-tetra-3,5-ditert-butylphenyl porphyrin, H2T(3,5-tBu)PP, in tetrachloromethane (TCM) solutions at 25 °C were determined. For TCM and benzene solutions of the compounds examined, relationship ÎK=K2âK1 was established as a function of van der Waals volume V2W, where K2=V2W/V20 and K1=V1W/V1* represent the packing coefficients of the solute and the solvent (V1* is molar volume of solvent), respectively. The resulting correlations were compared with the correlations established for members of various homologous series like n-alkanes, cycloalkanes, crown-ethers, cage structures. The ÎK-value was found to be closely related to the geometry of the solute molecule. Relationships are also given which relate V20 with the number n of the structural repeating units (methylene groups) in compounds H2T(4-OCnH2n+1)PP, n-alkanes, cycloalkanes, and crown-ethers. An attempt was made to interpret the solvation properties of the solutions of individual compounds in the homologous series and also the similarities and differences between the homologous series.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Liquids - Volume 121, Issue 1, 30 July 2005, Pages 27-34
Journal: Journal of Molecular Liquids - Volume 121, Issue 1, 30 July 2005, Pages 27-34
نویسندگان
W. Zielenkiewicz, G.L. Perlovich,