Arsabenzene

Arsabenzene (IUPAC name: arsinine) is an organoarsenic heterocyclic compound with the chemical formula C₅H₅As. It belongs to a group of compounds called heteroarenes that have the general formula C₅H₅E (E= N, P, As, Sb, Bi).

This air sensitive liquid has an onion odor, and it decomposes on heating. Arsabenzene is also an ambidentate ligand, and it prefers to coordinate using η(As)- or η(π)-routes.