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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.
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]
John August List (born September 25, 1968) is an American economist known for his work in establishing field experiments as a tool in empirical economic analysis. Since 2016, he has served as the Kenneth C. Griffin Distinguished Service Professor of Economics at the University of Chicago, where he was Chairman of the Department of Economics from 2012 to 2018. [2]
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.
New tests done by the Environmental Working Group have found 21 oat-based cereals and snack bars popular amongst children to have "troubling levels of glyphosate." The chemical, which is the ...
The Review of Economic Studies (also known as REStud) is a quarterly peer-reviewed academic journal covering economics. The journal is widely considered one of the top 5 journals in economics. [ 1 ] It is managed by the editorial board currently chaired by Ruben Enikolopov.
Map of Bourbon Street in New Orleans showing the locations of bollards that had been removed. / Credit: CBS News/Google Earth
The Tyrer-Cuzik Model and the Black Women's Health Study (BWHS) Breast Cancer Risk Calculator also include race and ethnicity in the assessment. The BOADICEA calculates risk for breast and for ...