What Does CUS Stand For?

CUS stands for Coordinatively Unsaturated Site

CUS, or Coordinatively Unsaturated Site, refers to a specific type of active site in a coordination complex or metal-based material where one or more coordination positions of a metal ion are vacant. This unsaturation enhances the site’s reactivity and ability to interact with ligands, enabling important applications in catalysis, adsorption, and sensor technology. CUSs are particularly significant in the study of heterogeneous catalysis, where they promote chemical transformations by facilitating the binding of substrates and intermediates.