Thermochemistry of complex salts of transition metals with tetrazolyl ligands |
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Authors: | T S Kon’kova Yu N Matyushin E A Miroshnichenko A B Vorob’ev |
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Institution: | 1.Semenov Institute of Chemical Physics,Russian Academy of Sciences,Moscow,Russia |
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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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Keywords: | |
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