manganocene
/maŋˈɡanə(ʊ)siːn/ /manˈɡanə(ʊ)siːn/Chemistry
noun
An organometallic compound, Mn(C5H5)2, which at room temperature adopts a polymeric structure, consisting of manganese atoms bonded to hydrocarbon rings in a zigzag chain.
Origin
1960s. From mangano- + -cene.