Partial molar volumes and partial molar adiabatic compressibilities of ethylenediamine complexes in water |
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| Authors: | Fumio Kawaizumi Fujimasa Nakao Hiroyasu Nomura |
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| Affiliation: | (1) Department of Chemical Engineering, School of Engineering, Nagoya University, Chikusa-ku, 464 Nagoya, Japan |
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| Abstract: | Densities and ultrasonic propagating velocities of aqueous solutions of ethylenediamine complexes [Co(en)3]Cl3, [Cr(en)3]Cl3, [Ni(en)3]Cl2, and [Cu(en)2]Cl2 (en=ethylenediamine), as well as the ligand ethylenediamine were measured at 25°C. The infinite dilution values of the partial molar volume V20 and partial molar adiabatic compressibility Ks0 were evaluated. The value of Ks0 of the ligand ethylenediamine is nearly zero. The values of V20 and Ks0 are combined with other interaction parameters, such as the Stokes radii and the viscosity B-coefficients, and their dependece upon the charge number and the stereochemistry of the complex ions is discussed. |
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| Keywords: | Partial molar volume partial molar compressibility solute-solvent interaction ethylenediamine ethylenediamine complex [Co(en)3]Cl3 [Cr(en)3]Cl3 [Ni(en)3]Cl2 [Cu(en)2]Cl2 |
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