Iodobenzene dichloride (PhICl2), also called Dichloroiodobenzene is a complex of iodobenzene with chlorine. It is commonly served as an oxidant.Single-crystal X-ray crystallography has been used to determine its structure; as can be predicted by VSEPR theory, it adopts a T-shaped geometry about the central iodine atom.
Dichloroiodobenzene is not stable, and is not commonly available commercially. Dichloroiodobenzene is prepared by passing chlorine gas through a solution of iodobenzene in chloroform, from which it precipitates. The same reaction has been reported at pilot plant scale (20 kg) as well.
PhI + Cl2 → PhICl2
An alternate preparation involving the use of chlorine generated in situ by the action of sodium hypochlorite on hydrochloric acid has also been described.
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