A New Approach to the Equilibrium Study of Iron(III) Thiocyanates Which Accounts for the Kinetic Instability of the Complexes Particularly Observable Under High Thiocyanate Concentrations

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avondale-bepress-to-dspace.facultyScience
avondale-bepress-to-dspace.peer_review_statusPeer reviewed before publication
avondale-bepress.abstract<p>The kinetic instability of iron(III) thiocyanate complexes in aqueous solution, evidenced by the loss of solution colour with time, has made it difficult to determine reliable equilibrium data. A technique, which measures the absorbance of these solutions as a function of time within milliseconds of mixing Fe<sup>3+</sup> with SCN<sup>-</sup> and which extrapolates to an initial spectrum at time zero, has been designed to overcome these difficulties and is described in this paper. Two complexes, Fe(SCN)<sup>2+</sup> and Fe(SCN)<sub>2</sub><sup>+</sup>, have been identified upon analysing the absorbance data for thiocyanate concentrations up to 0.25 M at 25<sup>o</sup>C and an ionic strength of 0.5 M. Equilibrium constants, <em>K<sub>1</sub> = </em> and <em>K<sub>2</sub></em> = have been determined and comparisons made with the literature.</p>
avondale-bepress.articleid1077
avondale-bepress.authorsKevin C de Berg
avondale-bepress.authorsMarcel Maeder
avondale-bepress.authorsSarah Clifford
avondale-bepress.context-key8418956
avondale-bepress.coverpage-urlhttps://research.avondale.edu.au/sci_math_papers/79
avondale-bepress.document-typearticle
avondale-bepress.field.author_faculty_disciplineScience
avondale-bepress.field.avon_earlyonline2016-03-02T00:00:00-08:00
avondale-bepress.field.comments<p>Due to copyright restrictions this article is unavailable for download.</p> <p>Copyright © 2016 Elsevier B.V. All rights reserved.</p> <p>Staff and Students of Avondale College may access the full text of this article via 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. (2016). A new approach to the equilibrium study of iron(III) thiocyanates which accounts for the kinetic instability of the complexes particularly observable under high thiocyanate concentrations. <em>Inorganica Chimica Acta, 445</em>, 155-159. doi:10.1016/j.ica.2016.02.052</p>
avondale-bepress.field.doihttps://doi.org/10.1016/j.ica.2016.02.052
avondale-bepress.field.email_boxtrue
avondale-bepress.field.embargo_date2018-04-03T00:00:00Z
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_numbers155-159
avondale-bepress.field.peer_reviewBefore publication
avondale-bepress.field.publication_date2016-04-24T00:00:00Z
avondale-bepress.field.reportable_itemsC1
avondale-bepress.field.source_fulltext_urlhttps://doi.org/10.1016/j.ica.2016.02.052
avondale-bepress.field.source_publication<p>This article was originally published as:</p> <p>de Berg, K., Maeder, M., & Clifford S. (2016). A new approach to the equilibrium study of iron(III) thiocyanates which accounts for the kinetic instability of the complexes particularly observable under high thiocyanate concentrations. <em>Inorganica Chimica Acta, 445</em>, 155-159. doi:10.1016/j.ica.2016.02.052</p> <p>ISSN: 0020-1693</p>
avondale-bepress.field.staff_classificationPermanent
avondale-bepress.field.volume_number445
avondale-bepress.keywordsIron thiocyanates; Kinetic instability; Initial spectrum; Stability constants
avondale-bepress.label79
avondale-bepress.publication-date2016-04-24T00:00:00Z
avondale-bepress.publication-titleScience and Mathematics Papers and Journal Articles
avondale-bepress.statepublished
avondale-bepress.submission-date2016-04-03T20:35:30Z
avondale-bepress.submission-pathsci_math_papers/79
avondale-bepress.titleA New Approach to the Equilibrium Study of Iron(III) Thiocyanates Which Accounts for the Kinetic Instability of the Complexes Particularly Observable Under High Thiocyanate Concentrations
avondale-bepress.typearticle
dc.contributor.authorClifford, Sarah
dc.contributor.authorMaeder, Marcel
dc.contributor.authorde Berg, Kevin C.
dc.date.accessioned2023-11-01T00:23:42Z
dc.date.available2023-11-01T00:23:42Z
dc.date.issued2016-04-24
dc.date.submitted2016-04-03T20:35:30Z
dc.description.abstract<p>The kinetic instability of iron(III) thiocyanate complexes in aqueous solution, evidenced by the loss of solution colour with time, has made it difficult to determine reliable equilibrium data. A technique, which measures the absorbance of these solutions as a function of time within milliseconds of mixing Fe<sup>3+</sup> with SCN<sup>-</sup> and which extrapolates to an initial spectrum at time zero, has been designed to overcome these difficulties and is described in this paper. Two complexes, Fe(SCN)<sup>2+</sup> and Fe(SCN)<sub>2</sub><sup>+</sup>, have been identified upon analysing the absorbance data for thiocyanate concentrations up to 0.25 M at 25<sup>o</sup>C and an ionic strength of 0.5 M. Equilibrium constants, <em>K<sub>1</sub> = </em> and <em>K<sub>2</sub></em> = have been determined and comparisons made with the literature.</p>
dc.description.versionBefore publication
dc.identifier.citation<p>de Berg, K., Maeder, M., & Clifford S. (2016). A new approach to the equilibrium study of iron(III) thiocyanates which accounts for the kinetic instability of the complexes particularly observable under high thiocyanate concentrations. <em>Inorganica Chimica Acta, 445</em>, 155-159. doi:10.1016/j.ica.2016.02.052</p>
dc.identifier.doihttps://doi.org/10.1016/j.ica.2016.02.052
dc.identifier.issn0020-1693
dc.identifier.urihttps://research.avondale.edu.au/handle/123456789/08418956
dc.language.isoen_us
dc.provenance<p>This article was originally published as:</p> <p>de Berg, K., Maeder, M., & Clifford S. (2016). A new approach to the equilibrium study of iron(III) thiocyanates which accounts for the kinetic instability of the complexes particularly observable under high thiocyanate concentrations. <em>Inorganica Chimica Acta, 445</em>, 155-159. doi:10.1016/j.ica.2016.02.052</p> <p>ISSN: 0020-1693</p>
dc.rights<p>Due to copyright restrictions this article is unavailable for download.</p> <p>Copyright © 2016 Elsevier B.V. All rights reserved.</p> <p>Staff and Students of Avondale College may access the full text of this article via 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; Stability constants
dc.titleA New Approach to the Equilibrium Study of Iron(III) Thiocyanates Which Accounts for the Kinetic Instability of the Complexes Particularly Observable Under High Thiocyanate Concentrations
dc.typeJournal Article
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