Equilibria of isomeric transformations of alkylbiphenyls

IY Roshchupkina, TN Nesterova…

Index: Roshchupkina, I. Yu.; Nesterova, T. N.; Rozhnov, A. M. Journal of Chemical Thermodynamics, 1987 , vol. 19, # 3 p. 299 - 306

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Abstract

Abstract Equilibria of mutual transformations of mono-, di-, and tri-alkylbiphenyls (abp) were investigated in the liquid phase at 308 to 423 K. On the basis of experimental equilibrium constants, values of Δ r H mo/(kJ· mol− 1) and Δ r S mo/(J· K− 1· mol− 1) were calculated. Below are given correspondingly: reaction, compound and values for Et-bp (I), i-Pr-bp (II), and t-Bu-bp (III): 4-abp= 3-abp, I, 0.23, 5.76; II,(0.45±0.41),(5.72±1.13); III,(0.48±0.53),( ...