aromatic compound


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cy·clic com·pound

any compound in which the constituent atoms, or any part of them, form a ring. Used mainly in organic chemistry where: 1) numerous compounds contain rings of carbon atoms (carbocyclic compounds) or carbon atoms plus one or more atoms of other types (heterocyclic compounds), usually nitrogen, oxygen, or sulfur; 2) where the atoms in the ring are all of the same element (homocyclic or isocyclic compound); 3) where the ring is saturated or contains nonconjugated double bonds (alicyclic compound), the compound is similar in properties to the corresponding acyclic compound (for example, cyclohexane resembles hexane); 4) where the ring contains conjugated double bonds in a closed loop in which there are 4n + 2 (where n is an integer) delocalized π electrons (Hückel rule) (aromatic compound; for example, benzene, pyridine), it is more stable than the corresponding saturated ring and exhibits unusual chemical properties characteristic of itself and not of other types of rings or of acyclic compounds. These aromatic compounds have the ability to sustain an induced ring current.

cy·clic com·pound

(sik'lik kom'pownd)
Any compound in which the constituent atoms, or any part of them, form a ring. Used mainly in organic chemistry.
Synonym(s): closed chain compound.

aromatic compound

Any of the ring or cyclic compounds related to benzene, many having a fragrant odor.
See also: compound
References in periodicals archive ?
These observations are in accordance with previously reports by Caldwell and Suflita (2000) and Coates et al., (2002); since the metabolism of aromatic compounds by sulfate reducing bacteria involve activation of the aromatic ring by methylation, hydroxylation or carboxylation.
The selection of aromatic compounds that allow discrimination was performed by an iterative method called "a leave-one-out" [22, 23].
Furthermore, the crystal structure of this dehalogenase provided detailed insight into the hydrolytic dehalogenation of chlorinated aromatic compounds.
Evstigneev, "Complexation of biologically active aromatic compounds with DNA in the presence of theophylline," Journal of Biological Physics, vol.
In general, sulfonation of aromatic compounds, using substituents of the first class (N[R.sub.2], NHR, N[H.sub.2], NHCOR, OH, OR, HS, RS, alkyl, halo-, NO), resulted in more para-isomers than ortho-isomers.
Academically, however, AWRI is rightly proud of the discovery of the first red wine aromatic compound, and in time hopes to identify others.
Wine is loaded with volatile components that evaporate easily: not just alcohol, but also aromatic compounds like esters and aldehydes.
to produce aromatic compounds and other petrochemicals.
Tenders are invited for supply of gc columns for aromatic compounds at crdc
(2018) discussed the alkyd resin enamel-coated particleboards via gas chromatography mass spectroscopy--olfactometry and found that the main odor substances released from the panels were aromatic compounds, aldehydes, and alkanes.
Spicy curries as well as those dishes laden with garlic and onion, cruciferous vegetables like cauliflower/broccoli, red meat and some varieties of cheeses are best avoided during summer as they contain volatile organic aromatic compounds that are released via sweat and give rise to bad body odours.
Low temperature pre-fermentation maceration (cold soaking) to extract color and aromatic compounds is not recommended with high-MP grapes.