Synthesis, characterization and catalytic properties of dinuclear complexes of copper(II) and nickel(II): Oxidation of cyclohexane, toluene and cyclopentane

Diastereomeric dinickel(ii) complexes with non-innocent bis(octaazamacrocyclic) ligands: isomerization, spectroelectrochemistry, DFT calculations and use in catalytic oxidation of cyclohexane

“…72–74 Nevertheless, our catalysts compare favorably to another recently reported system based on the dinickel( ii ) complex [Ni 2 (L 1 ) 2 (μ 2 -N 3 ) 2 (CH 3 OH) 2 ]·CH 3 OH, where HL 1 is 1-((2-hydroxyethylimino)methyl)naphthalen-2-ol, for the oxidation of cyclohexane, as it was found to be inactive in this case. 75 Moreover, our results are quite similar to those obtained by a set of related Ni( ii ) complexes of N-heterocyclic carbene ligands (NHC), trans -[X 2 Ni(NHC) 2 ] (X = Cl and I), achieving product yields of about 15% for cyclohexane oxidation, although our system proceeds under milder conditions. 76…”

“…72,73,74 Nevertheless, our catalysts compare favorably to another recently reported system based on the dinuclear nickel(II) complex [Ni 2 (L 1 ) 2 (μ 2 -N 3 ) 2 (CH 3 OH) 2 ]•CH 3 OH, where HL 1 is 1-((2hydroxyethylimino)methyl)naphthalen-2-ol, for the oxidation of cyclohexane, since it was found to be inactive in this case. 75 The cyclic voltammetry of the mononuclear and dinuclear nickel(II) complexes confirmed that the first and the second anodic peaks correspond to single-electron transfer processes on separate macrocycles and are followed by reversible chemical follow-up transformations. The potential separation between the first two oxidation peaks found for the isomers 4a/4s implies electronic interaction between the oxidized macrocycles.…”

Binuclear Transition Metal Complexes Derived From 3, 3’-Dihydroxy Benzidiene and 2-Amino Thio Phenol: Spectroscopic, Thermogravimetric, Dna Cleavage, and Antimicrobial Studies

“…complex, suggesting that the two copper ions have some sort of interaction with each other. Same reports are obtained in the following complexes also[Ni 2 (C 24 H 22 S 2 N 4 Cl 4 )] and [Mn 2 (C 24 H 22 S 2 N 4 Cl 4 )] [21][22].…”

Redox effects in Cu, Co or Fe in oxides nanocrystals with high catalytic activity for the acetonitrile combustion

“…Different hydrocarbons have been utilized as the substrates such as methane, cyclohexane, cyclopentane. Oxidation of cyclohexane is useful because its oxidized products, mainly cyclohexanol and cyclohexanone, are of great industrial importance [14].…”