Question: why are aliphatic diazonium salts unstable?
Answer: Stability of diazonium salts - definition Primary aliphatic amines form highly unstable alkanediazonium salts. ... The instability of alkanediazonium salts is due to their tendency to eliminate an exceptionally stable molecule of nitrogen to form carbocations i.e, aliphaticdiazoniumsaltR−N≡NX−→AlkylcarbocationR++N≡N+X−.