![]() #Oxygen reactivity how toRead more about how to correctly acknowledge RSC content. Permission is not required) please go to the Copyright If you want to reproduce the wholeĪrticle in a third-party commercial publication (excluding your thesis/dissertation for which : The Anomeric Effect and Related Stereoelectronic Effects at Oxygen (Reactivity and Structure: Concepts in Organic Chemistry, 15): 9783642686788. If you are the author of this article, you do not need to request permission to reproduce figuresĪnd diagrams provided correct acknowledgement is given. Provided correct acknowledgement is given. If you are an author contributing to an RSC publication, you do not need to request permission Please go to the Copyright Clearance Center request page. To request permission to reproduce material from this article in a commercial publication, Layered oxide compounds have always played a prominent role as positive electrode materials for lithium-ion batteries with LiCoO 2, LiNi 1/3 Co 1/3 Mn 1/3O 2 and LiNi 0.8 Co 0.15 Al 0. Various environmental stresses lead to excessive production of. Provided that the correct acknowledgement is given and it is not used for commercial purposes. Reactive oxygen species (ROS) are produced as a normal product of plant cellular metabolism. This article in other publications, without requesting further permission from the RSC, Hammarström,Ĭreative Commons Attribution-NonCommercial 3.0 Unported Licence. The reactivity of molecular oxygen and reactive oxygen species with hydrogenase biomimetics: reversibility and the role of the second coordination sphere These results provide new directions to design molecular electrocatalysts for proton reduction operated at ambient conditions and the re-engineering of hydrogenases for improving oxygen tolerance. In comparison, the complex lacking the nitrogen bridgehead, 2 pdt, exhibits reduced reactivity towards O 2 in the presence of reductants, highlighting that the importance of the second coordination sphere on modulating the oxygenation processes. This new identification of intermediate species serves as a model for studying the reversible inactivation and degradation of oxygen-sensitive hydrogenases by O 2, and provides chemical precedence for such processes. Interestingly, the whole process is reversible and the addition of protons can facilitate the deoxygenation process and prevent further degradation at room temperature. A one-electron reduced and oxygenated 1 adt species was identified and characterized spectroscopically, which can be directly generated by reacting with molecular oxygen and chemical reductants at room temperature but it is unstable and gradually decomposes. Here, two H 2-evolving diiron complexes ( 1 adt) and ( 2 pdt), inspired by the active site of hydrogenase, were investigated for their reactivity with molecular oxygen and reactive oxygen species. The mechanistic details of the enzyme's inactivation by molecular oxygen still remain unclear. For example, the hydrogenase enzymes are excellent catalyst for H 2 evolution but rapidly become inactivated in the presence of O 2. The development of oxygen-tolerant H 2-evolving catalysts plays a vital role for a future H 2 economy. ![]()
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