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benzene ring

   Also found in: Dictionary/thesaurus, Medical, Legal, Financial, Wikipedia, Hutchinson 0.06 sec.
benzene ring [′ben‚zēn ‚riŋ]
(organic chemistry)
The six-carbon ring structure found in benzene, C6H6, and in organic compounds formed from benzene by replacement of one or more hydrogen atoms by other chemical atoms or radicals.


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DDT is a mixture of three forms of the chemical, one of which has enantiomers--not due to the presence of an asymmetric carbon but the relative position of the chlorine atoms on each of the molecule's two benzene rings.
As a conceptual aid, we depicted these substitution patterns using a "square" (2,3,4,6-tetrachloro) and a "triangle" (2,4,5-trichloro) benzene ring (Figure 3).
Although the benzene ring was maintained as a rigid body, the three isopropyl groups and the sulfonamide group were allowed to rotate freely and independently within the molecule as shown in Scheme 1.
 
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