text: * dicyanoacetylene -  or , also called carbon subnitride or but-2-ynedinitrile
  * tetracyanoethylene -  or 
  * tetracyanomethane -  or 
  * 2,2-diisocyanopropanedinitrile -  or 
  * hexacyanoethane -  or 
  * hexacyanocyclopropane -  or 
  * hexacyanobutadiene -  or