Dicarbene is a chemical term that refers to a type of molecule that contains two carbene functionalities. Carbene is a highly reactive species that contains a divalent carbon atom with two unshared electrons. Synonyms that are commonly used instead of dicarbene include dialkyl-carbene, bis(carbene), and bis-n-heterocyclic carbene. Dicarbenes are commonly used in various organic reactions due to their high reactivity and the ability to form strong covalent bonds with other molecules. The key feature of dicarbenes is their ability to act as ambiphiles, which makes them useful in various fields like organic synthesis, materials science, catalysis, and medicinal chemistry.