Bis(triphenylphosphine)copper(I) nitrate is primarily used in organic synthesis as a catalyst. It facilitates various coupling reactions, such as the formation of carbon-carbon bonds, which are crucial in the production of complex organic molecules. This compound is also employed in the synthesis of heterocyclic compounds, which are important in pharmaceuticals and agrochemicals. Additionally, it is used in the preparation of coordination polymers and metal-organic frameworks (MOFs), which have applications in gas storage, separation processes, and catalysis. Its role in these processes highlights its versatility and importance in advanced chemical research and industrial applications.