Zdzisław Kinart

Studies on the intermolecular interactions in the binary mixtures of nitrobenzene with 2-methoxyethanol, 2-ethoxyethanol, 2-propoxyethanol and 2-butoxyethanol at T = 298.15 K

Densities, viscosities and speeds of sound, at T = 298.15 K, in the binary mixtures of nitrobenzene with 2-methoxyethanol, 2-ethoxyethanol, 2-propoxyethanol and 2-butoxyethanol have been measured as a function of composition. From the experimental data excess molar volumes V E, excess energies of activation for viscous flow (G* E), excess isentropic compressibility ( ) and the deviations in the viscosity (Δln η) from a mole fraction average have been calculated. The viscosity data were correlated with equations of Hind et al., Grunberg and Nissan, Frenkel, and McAllister. The results are discussed in terms of intermolecular interactions and structure of studied binary mixtures.

Density, relative permittivity and refractive index for propylene glycol mono n-butyl ether + 2-methoxyethanol mixtures

Densities (ρ), relative permittivities (ε) and refractive indexes (n) at five temperatures, between 293.15 and 313.15 K, of binary mixtures of propylene glycol mono n-butyl ether (1) + 2-methoxyethanol (2), are reported. The excess molar volumes (VE ), the relative permittivity and refractive index deviations (Δε and Δn) were calculated from these experimental data. The results are fitted to the Redlich–Kister polynomial equation to estimate the binary coefficients and standard errors. Furthermore, the experimental results are used to disclose the nature of binary interactions in the bulk of the binary mixtures studied.

Apparent molal volumes of sodium salts of some aliphatic carboxylic acids in water at 298.15 K

The apparent molal volumes, of three series of homologous organic sodium salts of the H(CH2) n COONa [n = 1–8], (CH2) n (COONa)2 [n = 0–6], Cl(CH2) n COONa [n = 1–4] types and sodium salts of some unsaturated carboxylic acids (ethylenecarboxylic acid, 3-butenoic acid, 4-pentenoic acid, trans-2-pentenoic acid, trans-2-hexenoic acid and 2-octenoic acid) in dilute aqueous solution have been determined by density measurements at T = 298.15 K. The densities were measured using a vibrating-tube densimeter (DMA 5000, Anton Paar, Austria) at T = 298.15 K. These results were used to calculate the apparent molal volumes of each solute over the concentration range 0.0050 ≤ m mol kg−1 ≤ 0.3000. The concentration dependence of apparent molal volumes of all studied electrolytes can be fitted to the Redlich–Meyer equation. Also, the values of limiting partial molal volume were calculated. The variations of both with aliphatic chain length of analysed salts of carboxylic acids were determined.

Density and relative permittivity of (pyridine + 2-methoxyethanol, 2-ethoxyethanol, 2-propoxyethanol, and 2-butoxyethanol) binary mixtures at 298.15 K

The densities and relative permittivities of binary mixtures of pyridine with 2-methoxyethanol, 2-ethoxyethanol, 2-propoxyethanol and 2-butoxyethanol have been measured as a function of composition, at T = 298.15 K. From the experimental data the excess molar volume (VE) and the deviation in the relative permittivity (Δε) from a mole fraction average have been calculated. The results are discussed in terms of intermolecular interactions and structure of studied binary mixtures.

Viscosity coefficients of KCl, NaCl, NaI, KNO3, LiNO3, NaBPh4 and Bu4NI in water-rich binary mixtures containing propan-2-ol at 298.15 K

ABSTRACT Viscosities of KCl, NaCl, NaI, KNO3, LiNO3, NaBPh4 and Bu4NI solutions (from ~0.01 M to ~0.05 M) in water (1) + propan-2-ol) (2) binary mixtures with mole fractions of propan-2-ol, x2 = 0.01, 0.02, 0.05, 0.075, 0.10 and 0.15, were determined at 298. 15 K. The relative viscosity data have been analysed and interpreted in terms of the Jones–Dole equation, ηr = A∙c1/2 + B∙c. The obtained results allowed to determine the values of B± coefficients for individual ions using the assumption about the equality . All the results presented in this article have been discussed in terms of ion–solvent interactions.

Viscosity coefficients of KCl, NaCl, NaI, NaBr, KNO3, LiNO3, AgNO3, NaClO4, NaBPh4, Bu4NI and Et4NI in rich of water binary mixtures containing propan-1-ol at 298.15 K

Abstract The viscosities of KCl, NaCl, NaI, NaBr, KNO3, LiNO3, AgNO3, NaClO4, NaBPh4, Bu4NI and Et4NI were determined in H2O–propan-1-ol (1-PrOH) mixtures (up to ca 0.15 mole fraction of 1-PrOH) as a function of concentration (0.01–0.05 mol∙dm−3) at T = 298.15 K to obtain Jones–Dole’s B coefficient. Using the assumption of the equality , the values of coefficients for individual ions have been calculated. All results have been discussed in terms of ion–solvent interactions.

Excess molar volumes of binary mixtures containing Dipropylene Glycol Monomethyl Ether with Water and 2-Methoxyethanol

Densities (ρ) at five temperatures, between 293.15 and 313.15 K, of binary mixtures of dipropylene glycol monomethyl ether + water and dipropylene glycol monomethyl ether + 2-methoxyethanol, are reported. The excess molar volumes (V E ) were calculated from these experimental data. The results are discussed in terms of intermolecular interactions.

Studies on the internal structure of the binary mixtures of N,N-dimethylacetamide with 2-methoxyethanol, 2-ethoxyethanol, 2-propoxyethanol and 2-butoxyethanol by means of measuring their densities and relative permittivities at 298.15 K

ABSTRACT The densities and relative permittivities of binary mixtures of N,N-dimethylacetamide with 2-methoxyethanol, 2-ethoxyethanol, 2-propoxyethanol and 2-butoxyethanol have been measured as a function of composition, at T = 298.15 K. From the experimental data the excess molar volume (VE) from a mole fraction and the excess relative permittivity (εE) from a volume fraction average have been calculated. The results are discussed in terms of intermolecular interactions and structure of studied binary mixtures.

Studies on the reaction of cyclopentadienyltri-n-butyltin with diethyl azodicarboxylate

The introduction of the tributylstannyl group at the cyclopentadiene ring affects its products with diethyl azodicarboxylate (DEAD). The reaction leads to the M-ene product in contrast to the analogous addition with cyclopentadiene. The obtained product undergoes dimerisation after purification on silica and then oligomerisation.