text: * cyanide -  ion, cyanide  and isocyanide  functional groups
  * dicyanamide -  or 
  * tricyanomethanide -  or 
  * pentacyanoethanide -  or 
  * pentacyanopropenide (pentacyanoallyl anion) - 
  * 2-dicyanomethylene-1,1,3,3-tetracyanopropanediide 
  * tricyanomelaminate anion - 
  * melonate - 
  *  anions -  (n odd) and  (n even)
  * cyanoacetlyide -  or 
  * cyanobutadiynylide -  or 
  * cyanopolyynide anions -  (n odd)