Structure, Bonding, Characterization
Phenyl compounds are derived from benzene (C6H6), at least conceptually and often in terms of their production. In terms of its electronic properties, the phenyl group is related to a vinyl group. The phenyl group is hydrophobic. Phenyl groups tend to resist oxidation and reduction. Phenyl groups (like all aromatic compounds) have enhanced stability in comparison to equivalent bonding in aliphatic (non-aromatic) groups. This increased stability is due to the unique properties of aromatic molecular orbitals.
The bond lengths between carbon atoms in a phenyl group are approximately 1.4 Å (Ångström).
In 1H-NMR spectroscopy, protons of a phenyl group typically absorb chemical shifts around 7.27 ppm. The position of these chemical shifts is influenced by aromatic ring current, and these values may change depending on substituents.
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