DIAZONIUM SALTS
The diazonium salts have the general formula 
–
2
R N X

 where R stands
for an aryl group and 
–
X  ion may be Cl
– Br,
– 
4
HSO , 
4
BF , etc They are
named by suffixing diazonium to the name of the parent hydrocarbon
from which they are formed, followed by the name of anion such as
chloride, hydrogensulphate, etc The 
N2
  group is called diazonium
group For example, 
–
2
6
C H5
N
Cl

 is named as benzenediazonium
chloride and C6H5N2
+HSO4
– is known as benzenediazonium
hydrogensulphate