metallocene

Noun. (chemistry) 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.

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This entry was last updated on RefTopia from its source on 3/20/2012.