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  2. Category:Free radicals - Wikipedia

    en.wikipedia.org/wiki/Category:Free_radicals

    Pages in category "Free radicals" The following 82 pages are in this category, out of 82 total. ... Free radical; Radical (chemistry) * Disposable soma theory of aging;

  3. Radical (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Radical_(chemistry)

    Lewis dot structure of a Hydroxide ion compared to a hydroxyl radical. In chemistry, a radical, also known as a free radical, is an atom, molecule, or ion that has at least one unpaired valence electron. [1] [2] With some exceptions, these unpaired electrons make radicals highly chemically reactive. Many radicals spontaneously dimerize. Most ...

  4. Hydroxyl radical - Wikipedia

    en.wikipedia.org/wiki/Hydroxyl_radical

    The hydroxyl radical can damage virtually all types of macromolecules: carbohydrates, nucleic acids , lipids (lipid peroxidation) and amino acids (e.g. conversion of Phe to m-Tyrosine and o-Tyrosine). The hydroxyl radical has a very short in vivo half-life of approximately 10 −9 seconds and a high reactivity. [5]

  5. Free-radical reaction - Wikipedia

    en.wikipedia.org/wiki/Free-radical_reaction

    A free-radical reaction is any chemical reaction involving free radicals. This reaction type is abundant in organic reactions . Two pioneering studies into free radical reactions have been the discovery of the triphenylmethyl radical by Moses Gomberg (1900) and the lead-mirror experiment [ 1 ] described by Friedrich Paneth in 1927.

  6. Fenton's reagent - Wikipedia

    en.wikipedia.org/wiki/Fenton's_reagent

    The free radicals generated by this process engage in secondary reactions. For example, the hydroxyl is a powerful, non-selective oxidant. [6] Oxidation of an organic compound by Fenton's reagent is rapid and exothermic and results in the oxidation of contaminants to primarily carbon dioxide and water.

  7. Category:Free radical reactions - Wikipedia

    en.wikipedia.org/wiki/Category:Free_radical...

    Pages in category "Free radical reactions" The following 25 pages are in this category, out of 25 total. This list may not reflect recent changes. ...

  8. Free-radical addition - Wikipedia

    en.wikipedia.org/wiki/Free-radical_addition

    Chain propagation: A radical reacts with a non-radical to produce a new radical species; Chain termination: Two radicals react with each other to create a non-radical species; In a free-radical addition, there are two chain propagation steps. In one, the adding radical attaches to a multiply-bonded precursor to give a radical with lesser bond ...

  9. Persistent radical effect - Wikipedia

    en.wikipedia.org/wiki/Persistent_radical_effect

    The persistent radical effect (PRE) in chemistry describes and explains the selective product formation found in certain free-radical cross-reactions. In these type of reactions, different radicals compete in secondary reactions. The so-called persistent (long-lived) radicals do not self-terminate and only react in cross-couplings.