Use of the Redox-Active Ligand 1,1'-Bis(diphenylphosphino)cobaltocene To Reversibly Alter the Rate of the Rhodium(I)-Catalyzed Reduction and Isomerization of Ketones and Alkenes

Bioinspired functional analogs of the active site of molybdenum enzymes: Intermediates and mechanisms

“…The phenomenon that the charge of the ligand backbone controls the rate of a nucleophilic attack had been demonstrated by Wrighton already in 1994 studying nucleophilic attack of azide on the carbonyl ligand of (1,l -bis(dipheny1phosphano)cobaltocene)rhenium(I) carbonyl complexes (Scheme 12b) [118]. This seminal demonstration has led to the concept of redox-switchable catalysis [119][120][121][122][123][124][125][126].…”

Olefin oligomerization, homopolymerization and copolymerization by late transition metals supported by (imino)pyridine ligands

“…Due to the redox-active properties of the ferrocene unit, these N 2 and N 4 -type ligands perturb the electronic properties (and therefore the reactivity) of the transition metal centers to which they are bound [42,43]. Iminopyridyl, bis(imino)pyridyl and tetra(imino)pyridyl ligands featured by long alkyl chain substituents at the imino nitrogens have been prepared by Mapolie et al [14,44,45], by reacting a solution of pyridine-2-carboxaldehyde with the respective alkyl amine(s) (Scheme 6b).…”

Synthesis and study of olefin metathesis catalysts supported by redox-switchable diaminocarbene[3]ferrocenophanes

“…Redox-switchable ligands offer a means to impart unique selectivities and/or activities to supported catalysts through oxidation state changes and, in many cases, may be switched using chemical or electrochemical processes. 4,5 A seminal example was reported by Wrighton in 1995, 4 where it was…”