Thermodynamic Parameters for the Formation of Pyrophosphate-protonated Polyamine Complexes

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Concetta De Stefano, Claudia Foti and Ottavia Giuffrè


Abstract

This work reports thermodynamic parameters for the complex formation of pyrophosphate-protonated amines (ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine and pentaethylenehexamine): as already found for log K, the TΔS° parameter also shows a linear dependence on the charges involved in the formation reaction.


References

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  8. Correlation coefficients are: ΔG°, r= 0.9953, 0.9905 and 0.9274, and for TΔS°, r= 0.9914, 0.9819 and 0.9797, for j= 0, 1 and 2, respectively. On the basis of a student's t test these values are always highly significant.
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