SINGLE-ION TRANSFER ENTHALPIES FOR PH4P+=BPH4-,NA+ AND I-IONS IN METHANOL-N,N-DIMETHYLFORMAMIDE MIXTURES

被引:10
作者
PIEKARSKA, A
TANIEWSKAOSINSKA, S
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D O I
10.1016/0040-6031(90)80536-8
中图分类号
O414.1 [热力学];
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摘要
Enthalpies of solution of Ph4PI and NaBPh4 in rnethanol-N,N-dimethylformamide (DMF) mixtures have been measured within the whole range of the mixed solvent composition. The ionic contribution to the transfer enthalpy from methanol to methanol-DMF mixtures based on the assumption that ΔHtXXX(BPh-4) = ΔHtxxx(Ph4P+), has been calculated using the data obtained and earlier data for NaI solution. The single-ion transfer enthalpies change monotonically with the mixture's composition, without any extrema typical of the systems containing water as a component of the mixed solvent. © 1990.
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页码:189 / 195
页数:7
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