Copper(I) Hydride

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Copper(I) hydride is an inorganic compound with the chemical formula CuH. It is a odourless red solid, which is incredibly difficult to isolate. The main reason copper(I) hydride is produced is as a catalyst for organic syntheses.

Synthesis
Copper(I) hydride can be made by reacting copper(II) sulfate with hypophosphite in a sulfuric acid solution.

Reactions
Copper(I) hydride constantly decomposes to make hydrogen and copper both under water and at 0 °C. If dried it has been shown to be pyrophoric.