Cyanide
…nitrogen atom. Ionic cyanides contain the cyanide anion −C≡N. This anion is extremely toxic and causes cyanide poisoning. Soluble cyanide salts such as sodium cyanide (NaCN), potassium cyanide (KCN) and tetraethylammonium cyanide ([(CH3CH2)4N]CN) are also highly toxic. Covalent cyanides contain the −C≡N group, and…