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Pronunciation varies by accent · noun
(organic chemistry) Any of a class of organic compounds 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 parallel to each other, or sometimes canted..
Use metallocene when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Metallocene means (organic chemistry) Any of a class of organic compounds 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 parallel to each other, or sometimes canted..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use metallocene where its definition matches the intended context.
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