STUDY OF THE ELECTRON-TRANSFER BETWEEN IRON(III) AND LANTHANIDE BISPHTHALOCYANINES THROUGH A WATER-SOLVENT INTERFACE, USING A MICRO LIQUID-LIQUID ELECTRODE
M. Lher et al., STUDY OF THE ELECTRON-TRANSFER BETWEEN IRON(III) AND LANTHANIDE BISPHTHALOCYANINES THROUGH A WATER-SOLVENT INTERFACE, USING A MICRO LIQUID-LIQUID ELECTRODE, Comptes rendus de l'Academie des sciences. Serie II. Mecanique, physique, chimie, astronomie, 322(1), 1996, pp. 55-62
Preliminary results are presented on the electron transfer from luteti
um bisphthalocyanines, Lu[Pc](2) and Lu[(t-Bu)(4)Pc](2), to the hexacy
anoferrate ion, Fe(III), across the liquid-liquid interface between di
chloromethane (S) and water (W): Lu[(tBu)(4)Pc](2) (S) + Fe(CN)(6)(3-)
(W) double left right arrow Lu[(tBu)(4)Pc](+)(2) (S) + Fe(CN)(6)(4-)
(W) A liquid-liquid microinterface has been used that behaves like the
solid microelectrodes. The diffusion regime is time dependent, being
radial at low scan rates and linear when the potential exploration is
faster than 0.1 V.s(-1). The electron transfer coefficient has been ev
aluated from a treatment of the results at a low scan rate: alpha = 0.
65. The rate constant for the electron transfer, obtained from the pea
k separation of the cyclic voltammogram at different scan rates is k d
egrees = 2.3 x 10(-3) cm.s(-1).