Benzoid

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Benzoid is a cyclic chemical structure in which three double bonds are formally retained within a single six-membered ring ( benzene ring ). Polycyclic benzoid hydrocarbons or benzoid aromatics are compounds that contain two or more condensed benzene rings.

A benzoid ring is in accordance with the Hückel rule , has an exceptional stability and makes a considerable contribution to stabilizing the resonance of cations in polycyclic aromatics .

Many benzoid aromatics (e.g. toluene , styrene , naphthalene ) are present in coal tar and can be isolated from it. Others can be represented, for example, by electrophilic substitution.

See also

Individual evidence

  1. ^ A b c Joachim Buddrus, Bernd Schmidt: Fundamentals of organic chemistry . Walter de Gruyter GmbH & Co KG, 2015, ISBN 978-3-11-033105-9 , p. 368 ( limited preview in Google Book search).
  2. ↑ Paula Yurkanis Bruice: Organic Chemistry compact studying . Pearson Deutschland GmbH, 2011, ISBN 978-3-86894-102-9 , pp. 650 ( limited preview in Google Book Search).
  3. ↑ Eberhard Breitmaier, Günther Jung: Organic Chemistry, 7th complete revision. u. exp. Edition 2012 Basics, classes of compounds, reactions, concepts, molecular structure, natural substances, synthesis planning, sustainability . Georg Thieme Verlag, 2014, ISBN 3-13-159987-1 , p. 551 ( limited preview in Google Book search).
  4. Jump- start chemistry . Springer-Verlag, 2013, ISBN 978-3-322-87175-6 , pp. 66 ( limited preview in Google Book search).