(Norbornadiene)molybdenum tetracarbonyl

(Norbornadiene)molybdenum tetracarbonyl is the organomolybdenum compound with the formula (C7H9)Mo(CO)4. Structurally, the compound consists of the norbornadiene bonded to a Mo(CO)4 fragment. The compound is a yellow, volatile solid. It is prepared by thermal or photochemical substitution of molybdenum hexacarbonyl. The compound was originally examined as a potential antiknock agent.

(Norbornadiene)molybdenum tetracarbonyl is a precursor to other derivatives of the type L2Mo(CO)4. This conversion exploits the lability of the diene ligand:
 * (C7H9)Mo(CO)4 +  2 L  →   C7H9  +  L2Mo(CO)4