As shown in the figure below, the phenyl group at the 2-position can carry different substituents.
The most widely used symbol is Ph, which represents the phenyl group.
Members have been reported with 18, 12, 9, 8, 7 and 6 phenyl groups.
It is a hydroxy ketone attached to two phenyl groups.
The phenyl groups are rotated at about a 30 angle from the core plane.
Most common derivatives have different substituents on the phenyl groups.
The phosphorus is connected to a phenyl group and two methyl groups.
The planes of the phenyl groups are almost at right angles to each other (the dihedral angle being 85.7 ).
That does not change when the phenyl group is substituted for one of the hydrogen atoms in the "2" position.
For example, triphenylmethane can be described as a methylidyne group connected to three phenyl groups.
