Compounds of Phosphorus - PCl5

Chemistry

definition

P_{4} (s) + 10 C l_{2} (g) \to 4 P C l_{5} (s)

P C l_{3} (l) + C l_{2} (g) \to P C l_{5} (s)

P_{4} (s) + 10 S O_{2} C l_{2} \to 4 P C l_{5} (s) + 10 S O_{2}

The hybridisation is

s p^{3} d

and has trigonal bipyramidal geometry in gaseous and liquid states. It has 3 equatorial

P - C l

bonds and two axial

P - C l

bonds.

It is pale yellow crystalline solid with a characteristic pungent smell. In solid it exists as

[P C l_{4}]^{+} [P C l_{6}]^{-}

Dissociation:

P C l_{5} ⇋ P C l_{3} + C l_{2}

Reactions with metals:

Z n + P C l_{5} \to Z n C l_{2} + P C l_{3}

Reactions with phosphorus pentoxide:

6 P C l_{5} + P_{4} O_{10} \to 10 P O C l_{3}

2 mins read