SEARCH Articles Figures Tables 1.3.4.5- Tetramethylimidazol-2-ylidene complexes with chromium, molybdenum 1.3.4.5- Tetramethylimidazol-2-ylidene reaction with chromocene 1.3.4.5- Tetramethylimidazol-2-ylidene reaction with samarium complexes Ylidene Ylidenes