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Thermodynamic constants (Cv> Cp and itf) and physical properties a, fis and v) of the n-CnF2n+2 compounds with n=4 to 8 were evaluted and estimated from correlations. The values are compared with those obtained for the corresponding molecules in the n-CnH2n+2 seriesandtfje results were found to be consistent with the published experimental data. The liquid structure or n-perfluorated compounds is discussed on the basis of these data.<p><p>As propriedades físicas (ßj, a, ßs e v) e as constantes termodinâmicas (Cv> Cpenj) dos compostos n—CnF2n+2 com n= 4 até 8 foram avaliadas e estimadas a partir de correlações. Os valores são comparados com aqueles obtidos para as moléculas correspondentes nas séries n-CnF2n+2 eos resultados encontrados são consistentes com os dados experimentais da literatura. A estrutura líquida dos compostos n—perfluorados é discutida com base nesses dados.