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  2. 9,10-Dihydro-9-oxa-10-phosphaphenanthrene-10-oxide - Wikipedia

    en.wikipedia.org/wiki/9,10-Dihydro-9-oxa-10...

    From the chemistry perspective, it is a derivative of hypophosphorous acid as well as a derivative of phenanthrene. The reactivity of the P-H center allows for the conjugation of DOPO to many monomers. Such monomers are incorporated into polymers, conferring fire retardant properties. [1]

  3. Conjugated system - Wikipedia

    en.wikipedia.org/wiki/Conjugated_system

    Cinnamaldehyde is a naturally-occurring compound that has a conjugated system penta-1,3-diene is a molecule with a conjugated system Diazomethane conjugated pi-system. In theoretical chemistry, a conjugated system is a system of connected p-orbitals with delocalized electrons in a molecule, which in general lowers the overall energy of the molecule and increases stability.

  4. Clar's rule - Wikipedia

    en.wikipedia.org/wiki/Clar's_rule

    Clar's rule is widely applied in the fields of chemistry and materials science. For instance, Clar's rule can be used to predict several properties of graphene nanoribbons . [ 10 ] Aromatic π-sextets play an important part in the determination of the ground state of open shell biradical -type structures., [ 4 ] Clar's rule can rationalize the ...

  5. Enolate - Wikipedia

    en.wikipedia.org/wiki/Enolate

    Through nitrogen lone pair conjugation, β-carbon becomes a nucleophilic site, permitting aza enolates to undergo alkylation reactions. [27] Thus, aza enolates can react with numerous electrophiles like epoxides and alkyl halides to form a new carbon-carbon bond on β-carbon. [24] Two potential reaction mechanisms are shown below:

  6. Homoconjugation - Wikipedia

    en.wikipedia.org/wiki/Homoconjugation

    In chemistry, homoconjugation has two unrelated meanings: In acid–base chemistry, homoconjugation is an alternate name for the phenomenon of homoassociation. In organic chemistry, homoconjugation is a type of conjugated system where two π-systems are separated by one non-conjugating group. See Conjugated system#Mechanism

  7. Triazabicyclodecene - Wikipedia

    en.wikipedia.org/wiki/Triazabicyclodecene

    The conjugate acid of TBD is the preferred cation among the guanidinium hypoiodites, which are specialized oxidizing agents for various types of organic compounds. [9]

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  9. Le Chatelier's principle - Wikipedia

    en.wikipedia.org/wiki/Le_Chatelier's_principle

    Le Chatelier–Braun principle analyzes the qualitative behaviour of a thermodynamic system when a particular one of its externally controlled state variables, say , changes by an amount , the 'driving change', causing a change , the 'response of prime interest', in its conjugate state variable , all other externally controlled state variables remaining constant.