Phenanthrene is a polycyclic aromatic hydrocarbon composed of three fused benzene rings--as the above formula shows. Phenanthrene has five resonance structures, given below.

Reactions of phenanthrene typically occur at the 9 and 10 positions.

Canonical forms of Phenanthrene

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External links

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Polycyclic aromatic hydrocarbons

Phenanthren | Phénanthrène | フェナントレン | ฟีนันทรีน | 菲