Benzenoid
Benzenoid refers to chemical systems composed of benzene rings connected in fused or edge-connected arrangements. In chemistry, benzenoid hydrocarbons are polycyclic aromatic hydrocarbons (PAHs) formed by one or more benzene rings sharing carbon–carbon bonds. In mathematical chemistry, benzenoid describes a class of graphs representing such hexagonal-ring structures.
Benzenoid systems are typically planar, with sp2-hybridized carbon atoms and extended pi-conjugation. The rings are usually
Examples and classifications include linear benzenoid hydrocarbons such as naphthalene, anthracene, tetracene, and pentacene (acenes), as
In graph theory, a benzenoid graph is a finite connected subgraph of the hexagonal lattice whose faces
Benzenoid structures underpin many materials in organic electronics, dyes, and pigments, and continue to be a