Used as a catalyst precursor in organometallic reactions, particularly in olefin metathesis and hydrogenation processes. It serves as a key reagent in the synthesis of complex organic molecules due to its ability to activate hydrogen and transfer it across unsaturated bonds. Also employed in research for developing new tungsten-based catalytic systems in homogeneous catalysis. Its reactivity with small molecules makes it valuable in studying reaction mechanisms involving metal-hydride intermediates.