SEARCH Articles Figures Tables Carbenes = methylenes Carbenes = methylenes chlorocarbene Carbenes triplet methylene Carbenes, generation methylene Carbenes. Methylene. Cycloaddition Metal-Carbene, -Methylene, -Carbyne and -Methylidyne Complexes Methylene carbene formation Methylene carbene from diazomethane Methylene, carbene singlet Titanium carbene complex, Tebbe methylenation