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Classics surprise: Exploration of the (C5Me4H)− chemistry of Sc, Y, and Lu metallocenes has led to the first example of a bis(η5)(η1)-tris(polyalkylcyclopentadienyl) complex and a new three-atom coordination mode for polyalkylcyclopentadienyl ligands (see scheme).
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Demir et al. (2010) studied this question.
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