cyclopentadieneWiktionary 原文英美释义名词noun1(organic chemistry) an unsaturated alicyclic hydrocarbon, C5H6; it forms complexes with some transition elements同族词派生词 9cyclopentadienone·cyclopentadienyl·cyclopentadienyl complex·metallocene·methylcyclopentadiene·methylenecyclopentadiene·pentamethylcyclopentadiene·titanacyclopentadiene·