About: Clar's rule

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In organic and physical organic chemistry, Clar's rule is an empirical rule that relates the chemical stability of a molecule with its aromaticity. It was introduced in 1972 by the Austrian organic chemist Erich Clar in his book The Aromatic Sextet. The rule states that given a polycyclic aromatic hydrocarbon, the resonance structure most important to characterize its properties is that with the largest number of aromatic π-sextets.

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  • In organic and physical organic chemistry, Clar's rule is an empirical rule that relates the chemical stability of a molecule with its aromaticity. It was introduced in 1972 by the Austrian organic chemist Erich Clar in his book The Aromatic Sextet. The rule states that given a polycyclic aromatic hydrocarbon, the resonance structure most important to characterize its properties is that with the largest number of aromatic π-sextets. (en)
  • In chimica organica, la regola di Clar è una regola empirica che mette in relazione la stabilità chimica di una molecola con la sua aromaticità. È stata introdotta nel 1972 dal chimico austriaco Erich Clar nel libro Il sestetto aromatico. (it)
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  • In organic and physical organic chemistry, Clar's rule is an empirical rule that relates the chemical stability of a molecule with its aromaticity. It was introduced in 1972 by the Austrian organic chemist Erich Clar in his book The Aromatic Sextet. The rule states that given a polycyclic aromatic hydrocarbon, the resonance structure most important to characterize its properties is that with the largest number of aromatic π-sextets. (en)
  • In chimica organica, la regola di Clar è una regola empirica che mette in relazione la stabilità chimica di una molecola con la sua aromaticità. È stata introdotta nel 1972 dal chimico austriaco Erich Clar nel libro Il sestetto aromatico. (it)
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  • Clar's rule (en)
  • Regola di Clar (it)
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