There's this chemical.
(No, not dihydrogen monoxide)
Some chemists write it as FOOF - and for good reason!
This stuff explodes when you mix it with other chemicals - and that's way down at -180ºC! I'd hate to see what happens when you try to do anything with it closer to, I don't know, the boiling point of liquid nitrogen?
Apparently it just can't be warmed to room temperature without Bad Things (tm) happening...
One example reaction: 4O2F2 + H2S -> SF6 + 2HF + 4O2 + 5920kJ/kg of energy
On an energy basis, a kilo of this mix would be as productive as, say, 1.3kg of TNT. Yes, the stuff that goes bang.