Equilibrium, Thermoanalytical and Spectroscopic Studies to Characterize Phytic Acid Complexes with Mn(II) and Co(II)

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorDe Carli, Ligia
dc.creatorSchnitzler, Egon
dc.creatorIonashiro, Massao
dc.creatorSzpoganicz, Bruno
dc.creatorRosso, Neiva Deliberali
dc.date2014-05-20T14:19:30Z
dc.date2016-10-25T17:41:07Z
dc.date2014-05-20T14:19:30Z
dc.date2016-10-25T17:41:07Z
dc.date2009-01-01
dc.date.accessioned2017-04-05T22:31:39Z
dc.date.available2017-04-05T22:31:39Z
dc.identifierJournal of The Brazilian Chemical Society. São Paulo: Soc Brasileira Quimica, v. 20, n. 8, p. 1515-1522, 2009.
dc.identifier0103-5053
dc.identifierhttp://hdl.handle.net/11449/25890
dc.identifierhttp://acervodigital.unesp.br/handle/11449/25890
dc.identifier10.1590/S0103-50532009000800019
dc.identifierS0103-50532009000800019
dc.identifierWOS:000271226900019
dc.identifierhttp://dx.doi.org/10.1590/S0103-50532009000800019
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/870722
dc.descriptionPotentiometric studies were carried out to determine the binding degree of phytic acid with Co(II) and Mn(II) ions, in the absence of dioxygen. Equilibrium constants for all major complexes formed are reported, and the results are presented in the form of distribution diagrams showing the concentrations of individual complexes as a function of pH. The formation constants of the complexes show higher values for the species in which the ligand was more deprotonated. Potentiometric data indicates that the species [MH(4)L](6-), was totally formed at pH 7.0 and the complexes were synthesized from this data. A solid state complex of Mn(II) and Co(II) with phytic acid was synthesized. Thermogravimetry, differential scanning calorimetry, and infrared spectroscopy were used to investigate and characterize the thermal behavior of these compounds. The results led to information on the composition, dehydration, thermal stability and thermal decomposition of the isolated complexes.
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.languageeng
dc.publisherSoc Brasileira Quimica
dc.relationJournal of the Brazilian Chemical Society
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectphytic acid
dc.subjectmanganese (II) complexes
dc.subjectcobalt (II) complexes
dc.subjectequilibrium studies
dc.subjectthermal behavior
dc.titleEquilibrium, Thermoanalytical and Spectroscopic Studies to Characterize Phytic Acid Complexes with Mn(II) and Co(II)
dc.typeOtro


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