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Thermodynamic clarification of the curious ferric/potassium ion exchange accompanying the electrochromic redox reactions of Prussian blue, iron(III) hexacyanoferrate(II)
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UNSPECIFIED (2004) Thermodynamic clarification of the curious ferric/potassium ion exchange accompanying the electrochromic redox reactions of Prussian blue, iron(III) hexacyanoferrate(II). JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 126 (33). pp. 10472-10477. doi:10.1021/ja040055r ISSN 0002-7863.
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Official URL: http://dx.doi.org/10.1021/ja040055r
Abstract
The recent Glasser-Jenkins method for lattice-energy prediction, applied to an examination of the solid-state thermodynamics of the cation exchanges that occur in electrochromic reactions of Prussian Blue, provides incisive thermodynamic clarification of an ill-understood ion exchange that accompanies particularly the early electrochromic cycles. A volume of 0.246 +/- 0.017 nm(3) formula unit(-1) for the ferrocyanide ion, Fe-II[(CN)(6)],(4-) is first established and then used, together with other formula unit-volume data, to evaluate the changes of standard enthalpy, entropy, and Gibbs energy in those ion-exchange reactions. The results impressively show by how much the exchange of interstitial Fe3+ ions by alkali metal ions, usually exemplified by K+, is thermodynamically favored.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry | ||||
Journal or Publication Title: | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | ||||
Publisher: | AMER CHEMICAL SOC | ||||
ISSN: | 0002-7863 | ||||
Official Date: | 25 August 2004 | ||||
Dates: |
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Volume: | 126 | ||||
Number: | 33 | ||||
Number of Pages: | 6 | ||||
Page Range: | pp. 10472-10477 | ||||
DOI: | 10.1021/ja040055r | ||||
Publication Status: | Published |
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