- Phenyl group
In
organic chemistry , the phenyl group or phenyl ring (often abbreviated as -Ph) is thefunctional group with the formulawhere the six carbon atoms are arranged in a cyclic ring structure. This
hydrophobic , highly stable andaromatic hydrocarbon unit can be found in manyorganic compound s. It can be thought of as being derived frombenzene (C6H6). In fact, in chemical literature benzene itself is sometimes denoted as Ph. One of the simplest phenyl containing compounds isphenol , C6H5OH. The resonance stability of phenol makes it a strongeracid than that ofaliphatic alcohols such asethanol (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 aspolystyrene .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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