ChemInform Abstract: Dioxygen-Copper Reactivity: Generation, Characterization, and Reactivity of a Hydroperoxo-Dicopper(II) Complex.
Abstract
The title complex (III) can be formed by three different routes.
ChemInform Abstract
The title complex (III) can be formed by three different routes. By direct protonation of (II), by a displacement reaction from (IV) with H2O2 and by reaction of protonated forms such as (Va) of the complex (I) with O2. Instead of (V) an analogous complex without the axial ligands can be used and gives a yield of 85% for (III). The syntheses of (V) are described. (Vb) is characterized by a crystal structure determination (P1, Z=1). (III) is investigated by EXAFS and electronic spectral measurements. The reactivity of (III) with organic substrates is studied. With in situ generated (III) (from (Vc)) a clean oxygen transfer reaction with PPh3 (VI) or tetrahydrothiophene (VIII) takes place in a stoichiometric reaction. Olefins are not oxygenated.
