Phenyl group

Phenyl group

In organic chemistry, the phenyl group or phenyl ring (often abbreviated as -Ph) is the functional group with the formula

:-C6H5

where the six carbon atoms are arranged in a cyclic ring structure. This hydrophobic, highly stable and aromatic hydrocarbon unit can be found in many organic compounds. It can be thought of as being derived from benzene (C6H6). In fact, in chemical literature benzene itself is sometimes denoted as Ph. One of the simplest phenyl containing compounds is phenol, C6H5OH. The resonance stability of phenol makes it a stronger acid than that of aliphatic alcohols such as ethanol (p"K"a = 10 vs. 16-18).

Presence of a phenyl group typically results in an 1H-NMR shift around 7.7ppm.

Phenyl groups can also be found in polymers such as polystyrene.

The phenyl group belongs to the Aryl group of compounds.

The phenyl group differs from the benzyl functional group in that benzyls have an extra CH2.


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  • phenyl group — Chem. the univalent group C6H5 , derived from benzene. Also called phenyl radical. * * * …   Universalium

  • phenyl group — Chem. the univalent group C6H5 , derived from benzene. Also called phenyl radical …   Useful english dictionary

  • Phenyl azide — Chembox new Name = Phenyl azide ImageFile = Phenyl azide A 2D skeletal.png ImageName = Phenyl azide IUPACName = Phenyl azide OtherNames = Azidobenzene Section1 = Chembox Identifiers SMILES = CASNo = 622 37 7 RTECS = Section2 = Chembox Properties… …   Wikipedia

  • Phényl — Phényle structure du groupe phényl Le groupe phényle (abrégé en Ph) est le groupe fonctionnel de formule C6H5. Ce nom désigne également le radical monovalent du benzène C6H5•. Les …   Wikipédia en Français

  • phenyl — /fen l, feen l/, adj. Chem. containing the phenyl group. [1840 50; PHEN + YL] * * * …   Universalium

  • phenyl radical — Chem. See phenyl group. * * * …   Universalium

  • phenyl radical — Chem. See phenyl group …   Useful english dictionary

  • phenyl — The univalent moiety, C6H5–, of benzene. p. alcohol SYN: phenol. p. aminosalicylate a second line antituberculosis drug with a high incidence of hypersensitivity reactions and gastrointestinal upset. p. salicylate …   Medical dictionary

  • phenyl — phen•yl [[t]ˈfɛn l, ˈfin l[/t]] n. chem. the univalent group C6H5, derived from benzene • Etymology: 1840–50 …   From formal English to slang

  • phenyl — /ˈfɛnəl/ (say fenuhl), /ˈfinəl/ (say feenuhl), /ˈfinaɪl/ (say feenuyl) noun a univalent group, C6H5, formally derived from benzene. {French phényle. See phen , yl} …  

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