Mild and efficient iodination of aromatic compounds with pyridine-iodine monochloride complex (PylCl) was written by Muathen, Hussni A.. And the article was included in Journal of Chemical Research, Synopses in 1994.Product Details of 20776-54-9 This article mentions the following:
A wide range of aromatic compounds (e.g., C6H6) have been effectively iodinated with a pyridine-iodine monochloride complex (I). Condensed polycyclic iodides, which are not readily obtained via direct iodination, can be prepared indirectly via their corresponding organomercurials in 1 step. Some benzoid and nonbenzoid heterocycles (e.g., indole) are iodinated with I. In the experiment, the researchers used many compounds, for example, 2-Amino-4-iodobenzoic acid (cas: 20776-54-9Product Details of 20776-54-9).
2-Amino-4-iodobenzoic acid (cas: 20776-54-9) belongs to iodide derivatives. Organic iodides are organic compounds containing a carbon-iodine (C-I) bond. The carbon-iodine bond is weaker than other carbon-halogen bonds due to the poor electronegative nature of the iodine atom. The C–I bond is the weakest of the carbon–halogen bonds. These bond strengths correlate with the electronegativity of the halogen, decreasing in the order F > Cl > Br > I. This periodic order also follows the atomic radius of halogens and the length of the carbon-halogen bond.Product Details of 20776-54-9
Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com