Abstract
The data available in the literature on thermodynamic properties concerning different oxaalkanes + tetrachloromethane mixtures are examined on the basis of the DISQUAC group contribution model. The obtained interaction parameters, dispersive and quasichemical, depend on the intramolecular environment of the O atom. The steric effect results in a regular decrease of the quasichemical interaction parameters of the oxygen/tetrachloromethane (e,d)-contact in linear ethers. The proximity effect of the O atoms generates lower coefficients in dioxaalkanes with respect to monooxaalkanes and because of the ring strain, being the quasichemical coefficients constant, the dispersive parameters in cyclic molecule are higher than in linear ethers.
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