Solvation of ions. XXV. Partial molal volumes of single ions in protic and dipolar aprotic solvents
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Partial molal volumes at 25� are reported for some 1 : 1 electrolytes, and for triphenylmethane, in dimethyl sulphoxide, N,N- dimethylformamide, acetonitrile, propylene carbonate, formamide and hexamethylphosphoramide. The assumption that ΔV�tr(Ph4As+) = ΔV�tr(BPh4-) was used to obtain ionic partial molal volumes of transfer from water to the non-aqueous solvents. Solvent compressibility appears to determine the partial molal volumes of non-electrolytes and large hydrophobic ions in solution. Values of ΔV�tr for cations and anions are discussed in terms of ion-solvent interactions, solvent-solvent interactions and steric crowding of large solvent molecules around the ions.
1985 ◽
Vol 50
(11)
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pp. 2493-2508
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1972 ◽
Vol 6
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pp. 197-204
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1976 ◽
Vol 5
(11)
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pp. 773-780
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1990 ◽
Vol 86
(3)
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pp. 489-494
1967 ◽
Vol 71
(7)
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pp. 2112-2116
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