The Relationship between the Electrochemical and Chemical Oxidation of Ferrocene‐Containing Carbonyl‐Phosphane‐β‐Diketonato‐Rhodium(I) Complexes – Cytotoxicity of [Rh(FcCOCHCOPh)(CO)(PPh₃)]

Abstract

Ferrocene-containing rhodium(I) complexes of the type [Rh(FcCOCHCOR)(CO)(PPh 3 )] with R = Fc (ferrocenyl), 1, Ph (phenyl), 2, CH 3 , 3, and CF 3 , 4, have been studied by cyclic voltammetry (CV) and bulk electrolysis techniques in CH 3 CN. Two isomers for complexes 2-4 were detected. Results are consistent with Rh I being oxidised first in an electrochemically irreversible two-electron transfer process, followed by the electrochemical reversible oxidation of each ferrocenyl group in a one-electron transfer process at slightly larger potentials. Only the E pa (Rh) CV peaks resolved into

Chemical and electrochemical oxidation of [Rh(β-diketonato)(CO)(P(OCH2)3CCH3)]: an experimental and DFT study

“…The oxidation peak is assigned to the oxidation of Rh(I) to Rh(III). The irreversible two electron electrochemical oxidation of rhodium(I) in the [Rh(β-diketonato)(CO)-(P(OCH 2 ) 3 CCH 3 )] complexes of this study is followed by a fast chemical reaction which is proposed to be the coordination of two solvent molecules (see Scheme 2) similar to that which was found for a series of [Rh(β-diketonato)(CO)(PPh 3 )], 27,28 [Rh(β-diketonato)(CO) 2 ], 29 [Rh(β-diketonato)(cod)] (cod = 1,5cyclooctadiene) 30 and [Rh(β-diketonato)(P(OPh) 3 ) 2 ] complexes. 31 It was not possible to distinguish between the oxidation potential of the two isomers of complexes (3), ( 4…”

Prediction of chemical and electrochemical oxidation potentials of β-diketonatobis(triphenylphosphite)rhodium(I) complexes: A DFT study

“…Various parameters can be used to describe the electronic effect of the substituent groups R and R 0 of which the pK a of the free b-diketone and the Gordy scale group electronegativities (v R + v R 0 ) are often used [21,22,[37][38][39][40][41][42].…”

Can Electrochemical Measurements Be Used To Predict X-ray Photoelectron Spectroscopic Data? The Case of Ferrocenyl-β-Diketonato Complexes of Manganese(III)

“…Ferrocene and its derivatives have been studied as nonlinear optical materials, asymmetric catalysts, high combustion-rate catalysts, smoke suppressing agents, donors in energy transfer processes, and anticancer drugs . They are also known to accelerate the rate of oxidative addition reactions while decelerating substitution processes …”