In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Efficient Two-Electron Reduction of Dioxygen to Hydrogen Peroxide with One-Electron Reductants with a Small Overpotential Catalyzed by a Cobalt Chlorin Complex, published in 2013-02-20, which mentions a compound: 1273-73-0, mainly applied to electron reduction oxygen hydrogen peroxide formation; reductant overpotential catalyzed cobalt chlorin complex, Quality Control of Bromoferrocene.
A Co chlorin complex (CoII(Ch)) efficiently and selectively catalyzed two-electron reduction of dioxygen (O2) by 1-electron reductants (ferrocene derivatives) to produce H2O2 (H2O2) in the presence of HClO4 (HClO4) in benzonitrile (PhCN) at 298 K. The catalytic reactivity of CoII(Ch) was much higher than that of a Co porphyrin complex (CoII(OEP), OEP2- = octaethylporphyrin dianion), which is a typical porphyrinoid complex. The two-electron reduction of O2 by 1,1′-dibromoferrocene (Br2Fc) was catalyzed by CoII(Ch), whereas virtually no reduction of O2 occurred with CoII(OEP). CoII(Ch) is more stable than CoII(OEP), where the catalytic turnover number (TON) of the two-electron reduction of O2 catalyzed by CoII(Ch) exceeded 30000. The detailed kinetic studies revealed that the rate-determining step in the catalytic cycle is the proton-coupled electron transfer reduction of O2 with the protonated CoII(Ch) ([CoII(ChH)]+) that is produced by facile electron-transfer reduction of [CoIII(ChH)]2+ by ferrocene derivative in the presence of HClO4. The 1-electron-reduction potential of [CoIII(Ch)]+ was pos. shifted from 0.37 V (vs. SCE) to 0.48 V by the addition of HClO4 due to the protonation of [CoIII(Ch)]+. Such a pos. shift of [CoIII(Ch)]+ by protonation resulted in enhancement of the catalytic reactivity of [CoIII(ChH)]2+ for the two-electron reduction of O2 with a lower overpotential as compared with that of [CoIII(OEP)]+.
I hope my short article helps more people learn about this compound(Bromoferrocene)Quality Control of Bromoferrocene. Apart from the compound(1273-73-0), you can read my other articles to know other related compounds.
Reference:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com