We report on the electrochemical and spectroscopical characterization of 10 ferrocenyl chalcones. These compounds were synthesized via the Claisen–Schmith condensation from acetylferrocene and the corresponding benzaldehyde or pyridine carboxaldehyde. The compounds were obtained in good yields
(60%)
and purified by recrystallization. All compounds exhibit a quasi-reversible electrochemical behavior and chemical reversibility, as evidenced by
ΔEnormalp
of 72–90 mV and
Ipa/Ipc
values equal to 1.0–1.17. The redox formal potential
(Eo′)
for these compounds range between 665 and 774 mV. The heterogeneous electron-transfer rate constants calculated from the Nicholson method are in the range of
(2.0–4.4)×10−2cm/s
. Their diffusion coefficients are on the order of
(1.65–3.7)×10−5cm2/s
, and the number of electrons transferred equals 1. 1-ferrocenyl-3-(
p-N,N
-dimethylaminophenyl)prop-2-en-1-one shows a behavior similar to dimethylaniline and undergoes electropolymerization, producing cationic oligomers and dimeric species. The UV/visible spectra show the characteristic bands for aromatic systems in the UV region (200 and 280 nm) and bands in the visible (400 and 500 nm). The molar absorbance coefficient
(ε)
values are in the ranges
(2.1–7.5)×104L/(molcm)
for
λmax
of 200–300 nm and
(1.8–17.6)×102L/(molcm)
for
λmax
of 300–500 nm.
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