Bismuthyl

Bismuthyl means a chemical species formally derived from the element bismuth and can refer to substituents bonded to the rest of a molecule through a bismuth atom, including:

• derivatives of bismuthanes, BiR₃, such as the diphenylbismuthyl group, Ph₂Bi–, found in the ion [Ph₂Bi−(Ge₉)−BiPh₂]²⁻
• trivalent bismuth species when considered as ligands, such as the tribromobismuthyl ligand, Br₃Bi→

In inorganic chemistry bismuthyl has been used to describe compounds such as BiOCl which were assumed to contain the diatomic bismuthyl, BiO⁺, cation, that was also presumed to exist in aqueous solution. This diatomic ion is not now believed to exist.