Phenanthrene

Phenanthrene is a polycyclic aromatic hydrocarbon with formula C₁₄H₁₀, formed from three benzene rings fused in an angular arrangement.

Polycyclic aromatic hydrocarbon: A hydrocarbon composed of multiple fused aromatic rings. Phenanthrene is a three-ring member of this broad family.
Anthracene: A three-ring polycyclic aromatic hydrocarbon with formula C₁₄H₁₀ and a linear arrangement of fused benzene rings. It has phenanthrene’s formula and ring count but a linear skeleton.
Phenanthrenequinone: A quinone derivative of phenanthrene with two carbonyl groups on its aromatic framework. Oxidation of phenanthrene can produce this more functionalized derivative.
Environmental fate: The transport, transformation, and persistence of a substance in the environment. Phenanthrene’s movement among air, water, soil, and organisms determines exposure.
Benzene: A six-carbon aromatic molecule with a planar ring of delocalized electrons. Three fused benzene rings form phenanthrene’s carbon framework.
Naphthalene: A polycyclic aromatic hydrocarbon consisting of two fused benzene rings, with formula C₁₀H₈. It is a smaller fused-ring hydrocarbon in the same structural family.
Phenanthridine: A nitrogen-containing fused-ring heterocycle structurally related to phenanthrene. Phenanthrene-like frameworks provide a basis for heterocyclic compounds used in chemical synthesis.
Biodegradation: The breakdown of substances by living organisms, especially microorganisms. Microbes can transform phenanthrene and reduce its environmental persistence.
Aromaticity: The enhanced stability associated with cyclic, conjugated electron systems satisfying aromatic electron-counting rules. Phenanthrene’s fused π system is commonly analyzed through aromaticity.
Biphenyl: An aromatic compound of two benzene rings joined by a single carbon–carbon bond. Its rings are connected, not fused as they are in phenanthrene.

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