Phenylene group

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File:P-phenylene-group-2D-skeletal.png
The chemical structure of the para-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.

File:Ortho-meta-para.svg
Isomer naming convention

References

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  1. ^ p. C-9, Section 11.6, Handbook of Chemistry and Physics, 62nd Edition, 1981-1982, CRC Press