Abstract

A calorimetric study was performed for adducts of general formula CdBr 2· nL ( n=1 and 2; L=ethyleneurea (eu) and propyleneurea (pu)). The standard molar reaction enthalpy in condensed phase: CdBr 2(c)+ nL(c)=CdBr 2· nL(c); Δ r H m θ , were obtained by reaction–solution calorimetry, to give the following values for mono- and bis-adducts: −19.54 and −34.59; −7.77 and −19.05 kJ mol −1 for eu and pu adducts, respectively. Decomposition (Δ D H m θ ) and lattice (Δ M H m θ ) enthalpies, as well as the mean cadmiumoxygen bond dissociation enthalpy, D〈CdO〉, were calculated for all adducts.

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