Coordination Geometry of the Discrete Pentafluoroaluminate Dianion [AlF₅]²⁻

Abstract

Welcome to the family: The previously unknown discrete pentafluoroaluminate [(CH3)4N]+2[AlF5]2− salt, a missing link of the homoleptic fluoroaluminate family, is synthesized from [(CH3)4N]+[AlF4]− and [(CH3)4N]+F−. IR and Raman spectroscopic data along with 27Al MAS NMR spectroscopy investigations reveal a perfect and unperturbed trigonal-bipyramidal structure (see picture). Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2003/z50885_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.