Phenylene group

In organic chemistry, the phenylene group (−C6H4−) is based on a di-substituted benzene ring (arylene).

For example, poly(p-phenylene) is a polymer built up from para-phenylene repeating units.

[1] The phenylene group has three structural isomers, based on which hydrogens are substituted: para-phenylene, meta-phenylene, and ortho-phenylene.

This article about an aromatic compound is a stub.

You can help Wikipedia by expanding it.