الإنجليزية - الإنجليزية
تعريف metallocene في الإنجليزية الإنجليزية القاموس.
- any of a class of organic compound containing two cyclopentadienyl anions and a transition metal whose bonding involves overlap of ns and np orbitals of the metal with molecular orbitals of appropriate symmetry of each cyclopentadienyl ring; the rings are either parallel to each other, or sometimes canted