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Sociedade Brasileira de Química, Química Nova, 4(31), p. 807-812

DOI: 10.1590/s0100-40422008000400019

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Sobre uma degenerescência acidental nos deslocamentos químicos de RMN de 31P{¹H} em complexos difosfínicos de rutênio

Journal article published in 2008 by Valle,Eliana Maira Agostini, Sérgio de Paula Machado ORCID, Machado,Sérgio de Paula, Eduardo Ribeiro de Azevedo, Eliana Maira Agostini Valle, Fabio Batista do Nascimento, Nascimento,Fabio Batista Do, Antonio Gilberto Ferreira ORCID, Ferreira,Antonio Gilberto, Alzir A. Batista, Batista,Alzir A., Marcos Cláudio Rodrigues Monteiro, Monteiro,Marcos Cláudio Rodrigues, Sérgio de Paula Machado, Javier Ellena and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

The [RuCl(bipy)(dppb)(4-pic)]PF6 complex was prepared and fully characterized. The X-ray crystal structure of this complex was determined in order to make an unambiguous distinction between the two possible positions of the 4-methylpyridine ligand (4-pic) in the compound: trans to phosphorus atom or trans to nitrogen atom. The [RuCl(bipy)(dppb)(4-pic)]PF6 complex exhibits an unusual temperature-dependent accidental degeneracy of the 31P chemical shifts in its solution NMR spectrum.