Abstract

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.  https://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, x_R, and the maximum binding energies of the Fe 2p_3/2 and the Fe 3p_3/2 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.

Keywords : XPS; binding energy; ferrocene; chalcones; electronegativity.

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