Interhalogen compounds properties

Two approaches that have been investigated recently for disinfection are mixtures of bromine and chlorine, and mixtures containing bromide or iodide salts. Some evidence exists that mixtures of bromine and chlorine have superior germicidal properties than either halogen alone. It is believed that the increased bacterial activity of these mixtures can be attributed to the attacks by bromine on sites other than those affected by chlorine. The oxidation of bromide or iodide salts can be used to prepare interhalogen compounds or the hypollalous acid in accordance with the following reaction ... 

As a general rule, the properties of interhalogen compounds are intermediate between those of their parent elements. For example, IC1 is a red solid that melts near room temperature, and BrF is a brownish gas that condenses to a liquid near room temperature. All six possible diatomic interhalogen compounds are known, and all act as strong oxidizing agents in redox reactions. 

Table 11.1 Major Interhalogen Compounds Compound Name and Formula Physical Properties... 

The halogens react with each other to form binary interhalogen compounds XY, XY3, XY5 and XY7, where X is the heavier halogen. A few ternary compounds are also known, e.g., IFCI2 and IF2CI. All interhalogen compounds contain an even number of halogen atoms. Table 17.2.1 lists the physical properties of some XYm compounds. 

XY All six possible diatomic interhalogen compounds between F, Cl, Br and I are known, but IF is unstable, and BrCl cannot be isolated free from Br2 and CI2. In general, the diatomic interhalogens exhibit properties intermediate... 

Table 17.2.1. Physical properties of some interhalogen compounds...

Discuss key features of Group 7A(17), understand how intermolecular forces and outer electron configuration account for physical and chemical properties, and descrihe the hydrogen halides, interhalogen compounds, and halogen oxides, oxoacids, and oxoanions ( 14.8) (EPs 14.66-14.73)... 

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