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An electron-withdrawing group (EWG) is a group or atom that has the ability to draw electron density toward itself and away from other adjacent atoms. [1] This electron density transfer is often achieved by resonance or inductive effects.
Delocalizing the radical ion stabilizes the transition state structure. As a result, the energy of activation decreases, enhancing the rate of the overall reaction. According to the captodative effect, the rate of a reaction is the greatest when both the EDG and EWG are able to delocalize the radical ion in the transition state structure. [7]
An electron donating group (EDG) or electron releasing group (ERG, Z in structural formulas) is an atom or functional group that donates some of its electron density into a conjugated π system via resonance (mesomerism) or inductive effects (or induction)—called +M or +I effects, respectively—thus making the π system more nucleophilic.
An electric effect influences the structure, reactivity, or properties of a molecule but is neither a traditional bond nor a steric effect. [1] In organic chemistry, the term stereoelectronic effect is also used to emphasize the relation between the electronic structure and the geometry (stereochemistry) of a molecule.
are signs the economic gains have begun to expand beyond the oil and gas fields and that the promise of abundant, low-cost fuels will give a competitive edge to industries from steel, aluminum and automobiles to fertilizers and chemicals.” (Asjylyn Loder, “America’s Energy Seen Adding 3.6 Million Jobs
MEXICO CITY (Reuters) -Mexican President Claudia Sheinbaum on Tuesday warned U.S. President-elect Donald Trump of dire economic consequences for both countries from tariffs and suggested possible ...
Principles of Economics [1] is an introductory economics textbook by Harvard economics professor N. Gregory Mankiw. It was first published in 1997 and has ten editions as of 2024. [ 2 ] The book was discussed before its publication for the large advance Mankiw received for it from its publisher Harcourt [ 3 ] and has sold over a million copies ...
Every 13-15 years, Saturn is angled in a way in which the edge of its thin rings are oriented toward Earth – effectively causing them to vanish. Saturn's rings will disappear from view of ground ...
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