The Thermodynamic Formation Constants for Iron(III) Thiocyanate Complexes at Zero Ionic Strength

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avondale-bepress-to-dspace.facultyScience
avondale-bepress-to-dspace.peer_review_statusPeer reviewed before publication
avondale-bepress.abstract<p>The successive thermodynamically relevant standard formation constants for Fe(SCN)<sup>2+ </sup>and Fe(SCN)<sub>2</sub><sup>+</sup> have been determined at 25<sup>0</sup>C using absorbance spectra at time zero to reduce the impact of kinetic instability. Average ionic strengths of 0.0581M, 0.0955 M, 0.1756 M, 0.2506 M, 0.5004 M, and 1.0011 M were used in the study to enable extrapolation to zero ionic strength. Extrapolation to zero ionic strength was supported by the application of the Specific Ion Interaction theory (SIT) developed by Bronsted, Guggenheim and Scatchard. Application to the iron(III) thiocyanate system led to a log value of (2.85 0.08) and a log value of (1.51 0.13). The change in the empirical specific ion interaction coefficients associated with , , is (-0.29), and that associated with , , is (-0.18). The log value is lower than those published in the literature due to the fact that, for this study, the equilibrium data were based on initial spectra captured before kinetic instability significantly interfered.</p>
avondale-bepress.articleid1090
avondale-bepress.authorsKevin C de Berg
avondale-bepress.authorsMarcel Maeder
avondale-bepress.authorsSarah Clifford
avondale-bepress.context-key10390039
avondale-bepress.coverpage-urlhttps://research.avondale.edu.au/sci_math_papers/90
avondale-bepress.document-typearticle
avondale-bepress.field.author_faculty_disciplineScience
avondale-bepress.field.avon_earlyonline2017-06-09T00:00:00-07:00
avondale-bepress.field.comments<p>Due to copyright restrictions this article is unavailable for download.</p> <p>Staff and Students of Avondale College may access the full text of this article via a Library PRIMO search <a href="https://avondale-primo.hosted.exlibrisgroup.com/primo-explore/search?vid=AVN&lang=en_US">here.</a></p>
avondale-bepress.field.custom_citation<p>de Berg, K., Maeder, M., & Clifford, S. (2017). The thermodynamic formation constants for iron(III) thiocyanate complexes at zero ionic strength. <em>Inorganica Chimica Acta, 466</em>, 249-253. doi:10.1016/j.ica.2017.06.017</p>
avondale-bepress.field.doihttps://doi.org/10.1016/j.ica.2017.06.017
avondale-bepress.field.email_boxtrue
avondale-bepress.field.embargo_date2019-07-03T00:00:00Z
avondale-bepress.field.field_of_education01 Natural and Physical Sciences
avondale-bepress.field.for030207 Transition Metal Chemistry
avondale-bepress.field.issn0020-1693
avondale-bepress.field.journalInorganica Chimica Acta
avondale-bepress.field.page_numbers249-253
avondale-bepress.field.peer_reviewBefore publication
avondale-bepress.field.publication_date2017-09-01T00:00:00Z
avondale-bepress.field.reportable_itemsC1
avondale-bepress.field.source_fulltext_urlhttps://doi.org/10.1016/j.ica.2017.06.017
avondale-bepress.field.source_publication<p>This article was originally published as:</p> <p>de Berg, K., Maeder, M., & Clifford, S. (2017). The thermodynamic formation constants for iron(III) thiocyanate complexes at zero ionic strength. I<em>norganica Chimica Acta, 466</em>, 249-253. doi:10.1016/j.ica.2017.06.017</p> <p>ISSN: 0020-1693</p>
avondale-bepress.field.staff_classificationPermanent
avondale-bepress.field.volume_number466
avondale-bepress.keywordsIron thiocyanates; Kinetic instability; Initial spectrum; Formation constants; Ionic strength; Activity coefficients
avondale-bepress.label90
avondale-bepress.publication-date2017-09-01T00:00:00Z
avondale-bepress.publication-titleScience and Mathematics Papers and Journal Articles
avondale-bepress.statepublished
avondale-bepress.submission-date2017-07-03T16:35:54Z
avondale-bepress.submission-pathsci_math_papers/90
avondale-bepress.titleThe Thermodynamic Formation Constants for Iron(III) Thiocyanate Complexes at Zero Ionic Strength
avondale-bepress.typearticle
dc.contributor.authorClifford, Sarah
dc.contributor.authorMaeder, Marcel
dc.contributor.authorde Berg, Kevin C.
dc.date.accessioned2023-11-01T00:25:04Z
dc.date.available2023-11-01T00:25:04Z
dc.date.issued2017-09-01
dc.date.submitted2017-07-03T16:35:54Z
dc.description.abstract<p>The successive thermodynamically relevant standard formation constants for Fe(SCN)<sup>2+ </sup>and Fe(SCN)<sub>2</sub><sup>+</sup> have been determined at 25<sup>0</sup>C using absorbance spectra at time zero to reduce the impact of kinetic instability. Average ionic strengths of 0.0581M, 0.0955 M, 0.1756 M, 0.2506 M, 0.5004 M, and 1.0011 M were used in the study to enable extrapolation to zero ionic strength. Extrapolation to zero ionic strength was supported by the application of the Specific Ion Interaction theory (SIT) developed by Bronsted, Guggenheim and Scatchard. Application to the iron(III) thiocyanate system led to a log value of (2.85 0.08) and a log value of (1.51 0.13). The change in the empirical specific ion interaction coefficients associated with , , is (-0.29), and that associated with , , is (-0.18). The log value is lower than those published in the literature due to the fact that, for this study, the equilibrium data were based on initial spectra captured before kinetic instability significantly interfered.</p>
dc.description.versionBefore publication
dc.identifier.citation<p>de Berg, K., Maeder, M., & Clifford, S. (2017). The thermodynamic formation constants for iron(III) thiocyanate complexes at zero ionic strength. <em>Inorganica Chimica Acta, 466</em>, 249-253. doi:10.1016/j.ica.2017.06.017</p>
dc.identifier.doihttps://doi.org/10.1016/j.ica.2017.06.017
dc.identifier.issn0020-1693
dc.identifier.urihttps://research.avondale.edu.au/handle/123456789/10390039
dc.language.isoen_us
dc.provenance<p>This article was originally published as:</p> <p>de Berg, K., Maeder, M., & Clifford, S. (2017). The thermodynamic formation constants for iron(III) thiocyanate complexes at zero ionic strength. I<em>norganica Chimica Acta, 466</em>, 249-253. doi:10.1016/j.ica.2017.06.017</p> <p>ISSN: 0020-1693</p>
dc.rights<p>Due to copyright restrictions this article is unavailable for download.</p> <p>Staff and Students of Avondale College may access the full text of this article via a Library PRIMO search <a href="https://avondale-primo.hosted.exlibrisgroup.com/primo-explore/search?vid=AVN&lang=en_US">here.</a></p>
dc.subjectIron thiocyanates; Kinetic instability; Initial spectrum; Formation constants; Ionic strength; Activity coefficients
dc.titleThe Thermodynamic Formation Constants for Iron(III) Thiocyanate Complexes at Zero Ionic Strength
dc.typeJournal Article
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