The “Noncoordinating” Anion Tf₂N⁻ Coordinates to Yb²⁺: A Structurally Characterized Tf₂N⁻ Complex from the Ionic Liquid [mppyr][Tf₂N]

Abstract

Not as innocent as it looks: The first anionic Tf2N− complex, [Yb(Tf2N)4]2−, has been prepared in the ionic liquid [mppyr][Tf2N] (see crystal structure; blue: N, yellow: S, gray: C, green: F, orange: Yb, red: O; mppyr=1-methyl-1-propyl-pyrrolidinium, Tf=trifloromethanesulfonyl). The coordination of the presumed noncoordinating (“innocent”) Tf2N2− ion could have a decisive influence on reactions in ionic liquids. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2005/z501297_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.