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Related Concept Videos

Catalysis02:50

Catalysis

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The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.
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Electron Carriers01:24

Electron Carriers

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Electron carriers can be thought of as electron shuttles. These compounds can easily accept electrons (i.e., be reduced) or lose them (i.e., be oxidized). They play an essential role in energy production because cellular respiration is contingent on the flow of electrons.
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Electron Transport Chain Components01:29

Electron Transport Chain Components

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The electron transport chain (ETC) is a crucial metabolic pathway that facilitates energy conversion in prokaryotic and eukaryotic cells. In eukaryotes, the ETC comprises four membrane-associated protein complexes in the inner mitochondrial membrane. In prokaryotes, the ETC in the plasma membrane can vary in composition, with fewer or different complexes depending on the organism and environmental conditions. These complexes transfer electrons from electron donors, such as NADH and FADH2, to...
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Electron Affinity03:07

Electron Affinity

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The electron affinity (EA) is the energy change for adding an electron to a gaseous atom to form an anion (negative ion).
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Electron Transport Chains

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The final stage of cellular respiration is oxidative phosphorylation that consists of two steps: the electron transport chain and chemiosmosis. The electron transport chain is a set of proteins found in the inner mitochondrial membrane in eukaryotic cells. Its primary function is to establish a proton gradient that can be used during chemiosmosis to produce ATP and generate electron carriers, such as NAD+ and FAD, that are used in glycolysis and the citric acid cycle.
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Electromotive Force01:02

Electromotive Force

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Electromotive force (emf) is the force that causes current to flow from a higher to a lower  potential. The term "electromotive force" is used for historical reasons, even though emf is not a force at all.
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Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
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Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

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The electron is a catalyst.

Armido Studer1, Dennis P Curran2

  • 1Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstrasse 40, 48149 Münster, Germany.

Nature Chemistry
|August 22, 2014
PubMed
Summary
This summary is machine-generated.

Electrons act as efficient catalysts in radical cascade reactions, similar to how protons catalyze acid/base reactions. This electron catalysis paradigm unifies various synthetic transformations, revealing a common mechanistic pathway.

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Area of Science:

  • Organic Chemistry
  • Catalysis
  • Reaction Mechanisms

Background:

  • Electrons are ubiquitous and often overlooked as catalysts.
  • Radical cascade reactions involve radical and radical ion intermediates.
  • Existing synthetic transformations lack a unified mechanistic understanding.

Purpose of the Study:

  • To present the electron as a catalyst in radical cascade reactions.
  • To establish an analogy between acid/base catalysis and redox catalysis.
  • To unify diverse synthetic transformations under the 'electron is a catalyst' paradigm.

Main Methods:

  • Review of existing literature on radical cascade reactions.
  • Conceptual analogy between proton and electron catalysis.
  • Mechanistic analysis of various synthetic transformations.

Main Results:

  • Demonstration of electron catalysis in diverse radical cascades.
  • Unification of reactions like SRN1, BHAS, radical Heck, and CDC.
  • Explanation of direct arene trifluoromethylations and radical alkoxycarbonylations as electron-catalyzed.

Conclusions:

  • The 'electron is a catalyst' paradigm provides a unifying mechanistic framework.
  • Electron catalysis explains a wide range of synthetic transformations.
  • Recognizing electron catalysis enhances understanding of radical reaction mechanisms.