Results 261 to 270 of about 5,774,152 (370)

Electrochemistry and Antioxidant Activities of Substituted Furanyl Nitrone: The Role of the Nitro Group

open access: yesChemElectroChem, EarlyView.
N‐methyl‐nitroaryl‐furanyl‐nitrone (LQB‐569) suffers a 10‐electron reduction, forming a hydrazine group with two terminal hydroxylamine groups. Nitrones’ antioxidant capacity (AO), despite being very low, correlates with their oxidation profiles, and the ones able to oxidize more easily have better results on DPPH• scavenging and ferric‐reducing ...
Danyelle Cândido Santos   +9 more
wiley   +1 more source

What Can be Learned From the Electrostatic Environments Within Nitrogenase Enzymes?

open access: yesChemistry – A European Journal, EarlyView.
The catalytic M‐clusters of nitrogenase enzymes exhibit characteristic electrostatic patterns around the sites involved in N2 fixation. Specifically, a strong local electric field pointing away from the Fe2 site is consistently identified, as well as a minor field pointing toward the Fe6 sites.
Thijs Stuyver   +3 more
wiley   +1 more source

Understanding Small Molecule Activation Promoted by Heavier Benzene 1,4‐diides: Interplay Between Diradical Character and Aromaticity

open access: yesChemistry – A European Journal, EarlyView.
The intricate relationship between diradical character, aromaticity, and reactivity in annulated heavier Group 14 benzene‐1,4‐diides (see picture) has been investigated through Density Functional Theory and ab initio calculations. A direct correlation between reactivity and diradical character, both of which increase down Group 14, is found.
Daniel González‐Pinardo   +2 more
wiley   +1 more source

Optimal control of axial dispersion tubular reactors with recycle: Addressing state‐delay through transport PDEs

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
The boundary‐regulated distributed parameter system of an axial dispersion tubular reactor with delayed recycle is showcased, along with the optimal observer‐based control strategy developed using a late‐lumping method for its stabilization. Abstract The optimal control of an axial tubular reactor with a recycle stream is addressed as a key type of ...
Behrad Moadeli   +2 more
wiley   +1 more source

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