Used primarily as a catalyst in organic synthesis, especially in oxidation reactions and olefin metathesis. It serves as a precursor for preparing other tungsten-based compounds and materials. In chemical vapor deposition (CVD), it functions as a volatile source of tungsten for producing thin tungsten oxide films, which have applications in electrochromic devices and sensors. Also employed in research for synthesizing nanomaterials and metal-organic frameworks due to its reactivity and ability to form complex intermediates.