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Thermodynamics of 2,2′,2′'-terpyridinecopper(II) complexes in aqueous solution (1979)

Calì, Rosario ; Rizzarelli, Enrico ; Sammartano, Silvio ; [et al.]

Springer

Transition metal chemistry 4 (1979), S. 328-332

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ISSN: 1572-901X

Source: Springer Online Journal Archives 1860-2000

Topics: Chemistry and Pharmacology

Notes: Summary The thermodynamic quantities relative to the protonation and the complexation of 2,2′,2′'-terpyridine with copper(II) ion have been determined at 25° and I=0.1 mol dm−3 (NaNO3). The ΔG∘ data was obtained by potentiometric measurements; a copper selective electrode was employed for the study of the complexation equilibria. The ΔH∘ values have been determined by direct calorimetry. The hydrolytic species, existing at pH〉6 and their relative ΔG∘ and ΔH∘ values have also been obtained. From the thermodynamic data the importance of enthalpy and entropy terms in stabilizing the complexes is assessed. Moreover some considerations on the chelating effect are reported.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00618328

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