benzene nucleus

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ben·zene nu·cle·us

the six conjugated carbon atoms of the benzene ring.
Farlex Partner Medical Dictionary © Farlex 2012

benzene ring

A closed aromatic structure composed of 6 carbon atoms linked with alternating single- and double-hydrogen bonds—2 atoms in the orbital and 1 atom in the π orbital.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
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