Results 31 to 40 of about 13,910,228 (354)

Oxidation State 10 Exists

open access: yesAngewandte Chemie, 2016
AbstractIn a recent paper, Wang et al. found an iridium‐containing compound with a formal oxidation state of 9. This is the highest oxidation state ever found in a stable compound. To learn if this is the highest chemical oxidation state possible, Kohn–Sham density functional theory was used to study various compounds, including PdO42+, PtO42+, PtO3F22+
Haoyu S. Yu, Donald G. Truhlar
openaire   +4 more sources

Operando Raman spectroscopy tracks oxidation-state changes in an amorphous Co oxide material for electrocatalysis of the oxygen evolution reaction.

open access: yesJournal of Chemical Physics, 2020
Transition metal oxides are of high interest in both energy storage (batteries) and production of non-fossil fuels by (photo)electrocatalysis. Their functionally crucial charge (oxidation state) changes and electrocatalytic properties are best ...
Chiara Pasquini   +3 more
semanticscholar   +1 more source

Iodine-catalyzed diazo activation to access radical reactivity

open access: yesNature Communications, 2018
Radical reactivity of diazo compounds, useful organic building blocks, is yet underexplored. Here, the authors report an iodine-catalyzed radical activation of diazo compounds affording a variety of substituted cyclopropanes, pyrroles and epoxides under ...
Pan Li   +5 more
doaj   +1 more source

Critical evaluation of potentiometric redox titration in enology [PDF]

open access: yes, 2005
Measurements of the zero current potential of a platinum electrode immersed in solutions of tanins or in wines of various origins, were performed during the additions of a solution of Ti(III), or of a solution of dichlorophenolindophenol (DCPIP), in ...
Comtat, Maurice, Durliat, Hélène
core   +3 more sources

Theoretical investigations of oxygen vacancy effects in nickel-doped zirconia from ab initio XANES spectroscopy at the oxygen K-edge

open access: yesBeilstein Journal of Nanotechnology, 2022
In this study, we present theoretical X-ray absorption near-edge structure (XANES) spectra at the K-edge of oxygen in zirconia containing Ni dopant atoms and O vacancies at varying concentrations.
Dick Hartmann Douma   +6 more
doaj   +1 more source

Oxidized Lipids in Persistent Pain States [PDF]

open access: yesFrontiers in Pharmacology, 2019
Chemotherapy, nerve injuries, or diseases like multiple sclerosis can cause pathophysiological processes of persistent and neuropathic pain. Thereby, the activation threshold of ion channels is reduced in peripheral sensory neurons to normally noxious stimuli like heat, cold, acid, or mechanical due to sensitization processes.
Osthues, Tabea, Sisignano, Marco
openaire   +5 more sources

Polyoxometalate-Based Catalysts for CO2 Conversion

open access: yesMolecules, 2019
Polyoxometalates (POMs) are a diverse class of anionic metal-oxo clusters with intriguing chemical and physical properties. Owing to unrivaled versatility and structural variation, POMs have been extensively utilized for catalysis for a plethora of ...
Yanwei Cao   +3 more
doaj   +1 more source

Graphitic phosphorus coordinated single Fe atoms for hydrogenative transformations

open access: yesNature Communications, 2020
Phosphorus ligands have been extensively used in metal complexes for homogeneous catalysis. Here, the authors broaden this scope to heterogeneous catalysis by preparing a P-coordinated Fe single atom catalyst with excellent catalytic performance in ...
Xiangdong Long   +8 more
doaj   +1 more source

The dn Number in Transition Metal Chemistry: Its Utility and Limitations

open access: yesChemistry, 2023
The dn number or configuration is a very useful parameter in transition metal chemistry because it conveys information about the expected properties of a d-block metal complex, including its shape, magnetism, thermodynamic stability, kinetic lability ...
Nicholas C. Norman, Paul G. Pringle
doaj   +1 more source

Dynamic charge and oxidation state of Pt/CeO2 single-atom catalysts

open access: yesNature Materials, 2019
The catalytic activity of metals supported on oxides depends on their charge and oxidation state. Yet, the determination of the degree of charge transfer at the interface remains elusive.
Nathan Daelman   +2 more
semanticscholar   +1 more source

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