Question

What are inter halogen compounds? Give one preparation.

Answer 1

Each halogen combines with another halogen to form several compounds known as interhalogen compounds.
They can be prepared by direct combination, or by the action of a halogen on a lower interhalogen, the product formed depends on the conditions.
i) $C{l}_2+F_2\left(equalvolume\right)\stackrel{473K}{\underset{\Delta }{⟶}}2ClF$
ii) $I{F}_2+F_2\left(excess\right)\stackrel{573K}{⟶}I{F}_7\left(A{X}_{7}type\right)$
iii) $C{l}_2+3F_2\left(excess\right)\stackrel{573K}{\underset{\left(A{X}_{3}type\right)}{⟶}}2Cl{F}_3$
iv) $B{r}_2+5F_2\left(excess\right)\underset{\left(A{X}_{5}type\right)}{⟶}2Br{F}_5$.