Iodobenzenes are a group of aryl iodides/halobenzenes consisting of one or more iodine atoms as substituents on a benzene core. They have the formula C<sub>6</sub>H<sub>6âÂÂn</sub>I<sub>n</sub>, where n = 1âÂÂ6 is the number of iodine atoms. Depending on the number of iodine substituents, there may be several constitutional isomers possible.