Crystal structures and magnetic properties of CuX2(pdmp)2 complexes (X = Br, Cl)

Página do item simplificado
dc.contributor.authorCosta-Filho, Antonio J.
dc.contributor.authorMunte, Claudia E.
dc.contributor.authorBarberato, Claudio
dc.contributor.authorCastellano, Eduarde E.
dc.contributor.authorMattioli, M. P. D. [UNESP]
dc.contributor.authorCalvo, Rafael
dc.contributor.authorNascimento, Otaciro R.
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Nacional de Litoral (UNL)
dc.date.accessioned2014-05-27T11:19:48Z
dc.date.available2014-05-27T11:19:48Z
dc.date.issued1999-12-01
dc.description.abstractWe report the synthesis and the structural and magnetic characterization of two new compounds: dibromobis-(pdmp)copper(II), CuBr2C22H24N4 (1), and dichlorobis(pdmp)copper(II), CuCl2C22H24N4 (2), where pdmp = 1-phenyl-3,5-dimethylpyrazole. The structures were refined by full-matrix least-squares techniques to R1 = 0.0620 and 0.0777, respectively. Compound 1 belongs to the space group P21/n with a = 8.165(5) Å, b = 10.432(3) Å, c = 13.385(4) Å, β = 100.12(4)̊, and Z = 2. Compound 2 belongs to the space group P21/c with a = 8.379(2) Å, b = 22.630(2) Å, c = 12.256(2) Å, β= 98.43(3)°, and Z = 4. It has the same molecular formula as a compound reported previously but a different crystal structure. Detailed single-crystal EPR measurements were performed for single-crystal samples of 1 and 2 at 9 and 35 GHz and at room temperature. The positions and line widths of the EPR lines were measured as a function of the magnetic field orientation in three orthogonal planes. The data were used to study the electronic properties of the copper ions and to evaluate the exchange interactions between them. Our results are discussed in terms of the electronic pathways for superexchange between copper ions, which are provided by the stacking of pyrazole and phenyl rings of neighboring molecules and by hydrogen-halogen bonds. © 1999 American Chemical Society.en
dc.description.affiliationInst. de Fis. de São Carlos Universidade de São Paulo, CP 369, 13560-970 São Carlos, SP
dc.description.affiliationInst. de Quim. de Araraquara UNESP, CP 174, 14800 Araraquara, SP
dc.description.affiliationFac. de Bioquim. y Cie. Biol. Univ. Nacional Del Litoral and INTEC, Güemes 3450, 3000 Santa Fe
dc.description.affiliationUnespInst. de Quim. de Araraquara UNESP, CP 174, 14800 Araraquara, SP
dc.format.extent4413-4421
dc.identifierhttp://dx.doi.org/10.1021/ic990245g
dc.identifier.citationInorganic Chemistry, v. 38, n. 20, p. 4413-4421, 1999.
dc.identifier.doi10.1021/ic990245g
dc.identifier.issn0020-1669
dc.identifier.scopus2-s2.0-0001758965
dc.identifier.urihttp://hdl.handle.net/11449/65921
dc.identifier.wosWOS:000083008800012
dc.language.isoeng
dc.relation.ispartofInorganic Chemistry
dc.relation.ispartofjcr4.700
dc.relation.ispartofsjr1,892
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.titleCrystal structures and magnetic properties of CuX2(pdmp)2 complexes (X = Br, Cl)en
dc.typeArtigo
dcterms.licensehttp://pubs.acs.org/page/copyright/index.html
unesp.author.orcid0000-0003-2864-0467[6]
unesp.author.orcid0000-0003-0499-8907[4]
unesp.author.orcid0000-0001-6730-8737[1]

Arquivos

Coleções

Artigos