Abstract
A combined use of precise combustion calorimetry and reaction calorimetry made it possible to obtain the standard enthalpy of formation of complex salts of transition metals (nickel, zinc, and cadmium) with 2-(1H-1,2,3,4-tetrazol-1-yl)acetohydrazide ligands. The enthalpy of combustion of the ligand was determined using combustion calorimetry, based on which its standard enthalpy of formation was calculated. For measurements by reaction calorimetry, a thermochemical cycle was designed to determine the standard enthalpy of formation of complex salts. The enthalpies of solution in water and in a 0.1 N hydrochloric acid solution of the ligand and complex transition metal salts were measured. Based on these data, the enthalpy of formation of the salts and the enthalpy of formation of three new complex ions were calculated.
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Original Russian Text © T.S. Kon’kova, Yu.N. Matyushin, E.A. Miroshnichenko, A.B. Vorob’ev, 2011, published in Khimicheskaya Fizika, 2011, Vol. 30, No. 4, pp. 62–67.
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Kon’kova, T.S., Matyushin, Y.N., Miroshnichenko, E.A. et al. Thermochemistry of complex salts of transition metals with tetrazolyl ligands. Russ. J. Phys. Chem. B 5, 298–303 (2011). https://doi.org/10.1134/S1990793111020333
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DOI: https://doi.org/10.1134/S1990793111020333