A thermochemical study of the reaction of CuCl 2·2H 2O with 8-hydroxyquinoline

Abstract

The solid-state coordination reaction of CuCl 2·2H 2O with 8-hydroxyquinoline (HQ): HQ(s)+CuCl 2·2H 2O(s)→Cu(HQ)Cl 2(s)+2H 2O(l) has been studied by solution calorimetry. The molar dissolution enthalpies of the reactants and the products in 3 mol l −1 HCl of the solid–solid coordination reaction have been measured using an isoperibol calorimeter. From the results and other auxiliary quantities, the standard molar formation enthalpy of [Cu(HQ)Cl 2,s,298.15 K] at 298.15 K has been derived: Δ f H m Θ(Cu(HQ)Cl 2,s,298.15 K)=−340.12 kJ mol −1.