C6H5I, also known as iodobenzene, is an organic compound that consists of a benzene ring (C6H5) with an iodine atom (I) attached to it. It is a colorless to pale yellow liquid at room temperature and has a sweet, aromatic odor. Iodobenzene is used in various chemical reactions and as a reagent in organic synthesis, particularly in the formation of other compounds. Iodobenzene is classified as a haloaromatic compound due to the presence of the iodine atom. It is less reactive than other haloalkanes but can undergo reactions such as nucleophilic substitution and coupling reactions. Its structure and properties make it valuable in the fields of organic chemistry and pharmaceutical research.