Thermochemistry of the dissolution of cobalt tetra-4-carboxymetallophthalocyanine in aqueous KOH solutions AT 298.15 K

Complexes of cobalt tetra-4-carboxy-phthalocyanine are prepared. The heat effects of dissolution of crystalline cobalt tetra-4-carboxymetallo-phthalocyanine in aqueous solutions of KOH of different concentrations (from 0.002 to 0.02 mol/L) at 298.15 K are determined by the direct calorimetric method. The values of standard enthalpies of compound formation are calculated by the additive group method based on group systematics with Benson-type fragment classification, which takes into account the influence of the primary environment of atoms. The standard enthalpies of formation of dissociation products of complexes of tetra-4-carboxy-phthalocyanines with cobalt in the aqueous solution are calculated.