On the interaction of copper with tris(hydroxymethyl)aminomethane

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dc.contributor.authorColombo, M. F. [UNESP]
dc.contributor.authorAustrilino, L.
dc.contributor.authorNascimento, O. R.
dc.contributor.authorCastellano, E. E.
dc.contributor.authorTabak, M.
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2022-04-28T18:55:11Z
dc.date.available2022-04-28T18:55:11Z
dc.date.issued1987-04-01
dc.description.abstractThe interaction of copper with tris(hydroxymethyl)aminomethane (TRIS) has been studied by optical and esr spectroscopic techniques. In solution, three different copper complexes are obtained as a function of pH. At pH 10 the room temperature esr parameters are g0 = 2.135, A0 = 82 G and nitrogen superhyperfine structure /tN = 9.5 G, characteristic of two nitrogen ligands; at pH 6.5, go = 2.147, A0 = 65 G and at pH 5.0, g0 = 2.180, A0 = 44 G. The high pH complex was crystallized and its molecular structure determined by X-ray methods. Space group and cell dimensions are C2/c, a = 12.955(2) Å, b = 10.793(1) Å, c= 10.091(2) Å,β= 116.62(1)°, V= 1261.4(6)Å3 = 4, Dc = 1.694gcm-3, R = 0.034 for 938 reflections with I > 3σ(I). The Cu2+ ion is located on the two-fold axis and coordinated to the oxygen and nitrogen atoms of two TRIS moieties; these ligand atoms form the rectangular base of a pyramid structure in which oxygen from a water molecule acts as the fifth ligand.en
dc.description.affiliationInstitute de Biociências Letras e Ciências Excitas UNESP
dc.description.affiliationInstitute de Física e Química de Sâo Carlos - USP
dc.description.affiliationUnespInstitute de Biociências Letras e Ciências Excitas UNESP
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.format.extent821-826
dc.identifierhttp://dx.doi.org/10.1139/v87-139
dc.identifier.citationCanadian Journal of Chemistry, v. 65, n. 4, p. 821-826, 1987.
dc.identifier.doi10.1139/v87-139
dc.identifier.issn0008-4042
dc.identifier.scopus2-s2.0-2742606305
dc.identifier.urihttp://hdl.handle.net/11449/219367
dc.language.isoeng
dc.relation.ispartofCanadian Journal of Chemistry
dc.sourceScopus
dc.titleOn the interaction of copper with tris(hydroxymethyl)aminomethaneen
dc.typeArtigo

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