Dicyanoacetylene, also called carbon subnitride or but-2-ynedinitrile (IUPAC), is a compound of carbon and nitrogen with chemical formula . At room temperature, dicyanoacetylene is a colorless volatile liquid. It has a linear molecular structure, (often abbreviated as ), with alternating triple and single covalent bonds. It can be viewed as acetylene with the two hydrogen atoms replaced by cyanide groups.
Dicyanoacetylene, also called carbon subnitride or but-2-ynedinitrile (IUPAC), is a compound of carbon and nitrogen with chemical formula . At room temperature, dicyanoacetylene is a colorless volatile liquid. It has a linear molecular structure, (often abbreviated as ), with alternating triple and single covalent bonds. It can be viewed as acetylene with the two hydrogen atoms replaced by cyanide groups.
Because of its high endothermic heat of formation, dicyanoacetylene can explode to carbon powder and nitrogen gas, and it burns in oxygen with a bright blue-white flame at a temperature of , the hottest flame in oxygen; burned in ozone at high pressure the flame temperature exceeds . Dicyanoacetylene polymerizes at room temperature into a dark solid.
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