endothermic compound

Benzene is an example of an endothermic compound.

They are called endothermic compounds.

The standard free energy of the compound is about +315 kJ/mol, making it an endothermic compound which decomposes explosively to metallic silver and nitrogen gas.

It is very unstable at room temperature and must be stored at freezer temperatures to prevent reversion to elemental polonium and hydrogen; this is because it is an endothermic compound, like the lighter hydrogen telluride and hydrogen selenide, and decomposes into its constituent elements, releasing heat in the process.