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Opposites attract: The compounds [(η5-C5Me5)2LnAl(η5-C5Me5)] (Ln=Eu, Yb; see scheme) represent the first compounds with a bond between aluminum and a 4f metal. The bonds are predominantly electrostatic with insignificant charge-transfer and covalent contributions. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2006/z600423_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
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Gamer et al. (2006) studied this question.
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