Abstract
The IR spectra and solution densities in a binary liquid system (BLS) HF-diethyl ketone were measured for the first time upon variation of the component molar ratio from 1: 12 to 12: 1 and to 27: 1, respectively. Analysis of the concentration dependences of normalized (to the total number of moles of BLS components in 1 L) optical density and excess density of the solutions revealed the presence of 1: 1, 4: 1, and ∼12: 1 heteroassociates (HAs). For each associate, the concentration range in which it forms in the HF-(C2H5)2CO binary mixture was estimated. It was shown that, at component molar ratios from 2: 1 to 9: 1, all three types of HAs are present simultaneously.
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