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