Any of a group of organometallic compounds that consist of a metal atom bonded between two cyclopentadienyl (or similar aromatic) rings in a sandwich structure, used especially as catalysts in polymer synthesis.
Origin
1950s; earliest use found in Journal of the American Chemical Society.
Definition of metallocene in US English:
metallocene
noun
Chemistry
Any of a group of organometallic compounds that consist of a metal atom bonded between two cyclopentadienyl (or similar aromatic) rings in a sandwich structure, used especially as catalysts in polymer synthesis.
Origin
1950s; earliest use found in Journal of the American Chemical Society.