Evidence for the Existence of a Terminal Imidoscandium Compound: Intermolecular CH Activation and Complexation Reactions with the Transient ScNAr Species†
Jennifer Scott Dr.
Department of Chemistry and the Molecular Structure Center, Indiana University, Bloomington, IN 47405 (USA), Fax: (+1) 812-855-8300
Search for more papers by this authorFalguni Basuli
Department of Chemistry and the Molecular Structure Center, Indiana University, Bloomington, IN 47405 (USA), Fax: (+1) 812-855-8300
Search for more papers by this authorAlison R. Fout
Department of Chemistry and the Molecular Structure Center, Indiana University, Bloomington, IN 47405 (USA), Fax: (+1) 812-855-8300
Search for more papers by this authorJohn C. Huffman Dr.
Department of Chemistry and the Molecular Structure Center, Indiana University, Bloomington, IN 47405 (USA), Fax: (+1) 812-855-8300
Search for more papers by this authorDaniel J. Mindiola Prof. Dr.
Department of Chemistry and the Molecular Structure Center, Indiana University, Bloomington, IN 47405 (USA), Fax: (+1) 812-855-8300
Search for more papers by this authorJennifer Scott Dr.
Department of Chemistry and the Molecular Structure Center, Indiana University, Bloomington, IN 47405 (USA), Fax: (+1) 812-855-8300
Search for more papers by this authorFalguni Basuli
Department of Chemistry and the Molecular Structure Center, Indiana University, Bloomington, IN 47405 (USA), Fax: (+1) 812-855-8300
Search for more papers by this authorAlison R. Fout
Department of Chemistry and the Molecular Structure Center, Indiana University, Bloomington, IN 47405 (USA), Fax: (+1) 812-855-8300
Search for more papers by this authorJohn C. Huffman Dr.
Department of Chemistry and the Molecular Structure Center, Indiana University, Bloomington, IN 47405 (USA), Fax: (+1) 812-855-8300
Search for more papers by this authorDaniel J. Mindiola Prof. Dr.
Department of Chemistry and the Molecular Structure Center, Indiana University, Bloomington, IN 47405 (USA), Fax: (+1) 812-855-8300
Search for more papers by this authorThe authors thank the NSF (CHE-0348941), the Sloan and the Dreyfus Foundation for financial support of this research. J.S. acknowledges NSERC for a postdoctoral fellowship. Dr. Hongjun Fan is thanked for performing DFT calculations and Dr. John Tomaszewski is also acknowledged for aid with multinuclear NMR spectroscopic studies. Supporting information for this article is available on the WWW under http://www.angewandte.org or from the author.
Graphical Abstract
Don't blink or you'll miss it: A transient imidoscandium complex (see scheme) can be generated by several routes. The imido ligand can activate the CH bond in pyridine and benzene, and it can be complexed with Al(CH3)3 to yield an imide zwitterion. A combination of isotopic labeling, reactivity, and theoretical studies strongly endorse formation of a terminal imido ligand at scandium.
Supporting Information
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