1450852-60-4Relevant academic research and scientific papers
Thiomethyl substituted dicopper complexes: Attempts to reproduce the asymmetry of the active site from type 3 copper enzymes
Rammal, Wassim,Selmeczi, Katalin,Philouze, Christian,Saint-Aman, Eric,Pierre, Jean-Louis,Belle, Catherine
, p. 1477 - 1482 (2013)
Two new dinucleating phenol-based ligands (m-HLSMe and p-HL SMe) bearing pyridine-containing pendant arms with a SMe group on one pyridine (meta or para position relative to the pyridine nitrogen atom) have been synthesized. After coordination by two copper(II) ions, the corresponding μ-phenoxido, μ-hydroxido dicopper(II) complexes were isolated and characterized by UV/Vis, EPR spectroscopy, single-crystal X-ray analysis (for the complex with the SMe substituent at the meta position) and electrochemistry. The presented compounds mimic the active site of type 3 copper enzymes and in particular the distinct environments of the copper ions.Both complexes are active as catalysts for the oxidation of 3, 5-di-tert-butylcatechol to the respective quinone. The catalytic properties of the complexes depend on substrate binding, as reflected by the KM values determined for the complexes in presence of 3, 5-dtbc and are not correlated directly with the redox properties of the dicopper center. Copyright
