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Kinetics and Mechanism of Formation of 1:1 Complex Between Chromium(III) with 1,3-Propane Diaminetetraacetate in Aqueous Acidic Media

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1TitleTitle of DocumentKinetics and Mechanism of Formation of 1:1 Complex Between Chromium(III) with 1,3-Propane Diaminetetraacetate in Aqueous Acidic Media
2CreatorAuthor's name, affiliation, country M. F. ABDEL-MESSIH
Chemistry Department, Faculty of Science, Ain Shams University, Abbassia, Cairo, Egypt
3SubjectDicipline(s) Chemical Science
3SubjectKeywords Kinetic, Mechanism, Substitution, 1,3-Propanediaminetetraacetic acid, Chromium(III)
4DescriptionAbstract The kinetics of the formation of 1:1 complex of chromium(III) with 1,3-propanediamine N, N,N' N'-tetraacetate (1,3-pdta) was followed spectrophotometrically at λmax; = 552 nm. The reaction was found to be first order in chromium(III). Increasing the 1,3-pdtp concentration from 2.2x10-2 to 8.8 mol dm-3 accelerated the reaction rate. Increasing the pH from 3.3 to 4.7 accelerated the reaction rate, the reaction rate was also retarded by increasing ionic strength and dielectric constant of the reaction medium. A mechanism was suggested to account for the results obtained which involves ion pair formation between the various species of the reactants. Value of 37.13 kJ mol-1 was obtained for the energy of activation and -195.66 JK-1 mol-1 for the entropy of activation indicate an associative mechanism for the reaction. The logarithms of the formation constant of 1:1 complex formed for complex formed was found 7.31.
5PublishersOrganizing agency, location WWW Publications, India
6Contributor Sponsor(s) -
7DateDate (YYYY-MM-DD) -
8TypeStatus & genre Peer-reviewed Article
8TypeType
9FormateFile Formate PDF
10IdentifierUniform Resource Identifier Click Here
10IdentifierDigital Object Identifier DOI:10.7598/cst2013.352
11SourceJournal/conference title; vol., no. (Year)Chemical Science Transactions, Volume  2 , Number  (2), (2013)
12LanuguageEnglish=en en
13RelationSupp.files
14Coverage -
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