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South African Journal of Chemistry
versão On-line ISSN 1996-840X
versão impressa ISSN 0379-4350
Resumo
ERASMUS, E.. Electronic effects of group fragments on the XPS of Fe 2p and 3p photoelectron lines of ferrocenyl-containing chalcones. S.Afr.j.chem. (Online) [online]. 2017, vol.70, pp.94-99. ISSN 1996-840X. http://dx.doi.org/10.17159/0379-4350/2017/v70a13.
A series of ferrocenyl-containing chalcones, Fc-CO-CH=CH-C6H4R, with the R-group on the /wa-position on the phenyl ring and R = OCH3(1), CH3(2), C6H5 (3), tBu (4), H(5), Br (6) and CF3(7) were subjected to an X-ray photoelectron spectroscopy (XPS) study. The linear relationships obtained between the Gordy-scale group electronegativity of molecular fragment R, xR, and the maximum binding energies of the Fe 2p3/2 and the Fe 3p3/2 photoelectron lines, confirmed communication between the iron atom of the ferrocene moiety and the molecular fragments, R, of 1-7. These relationships illustrated that the influence of the electronic properties of the molecular fragments are more pronounced in the Fe 3p photoelectron lines than in the Fe 2p photoelectron lines.
Palavras-chave : XPS; binding energy; ferrocene; chalcones; electronegativity.