Anion–π Interactions: Do They Exist?
David Quiñonero(Universitat de les Illes Balears), Carolina Garau(Universitat de les Illes Balears), Carmen Rotger(Universitat de les Illes Balears), Antonio Frontera(Universitat de les Illes Balears), Pablo Ballester(Universitat de les Illes Balears), Antoni Costa(Universitat de les Illes Balears), Pere M. Deyà(Universitat de les Illes Balears)
Angewandte Chemie International Edition
September 16, 2002
Cited by 748
Abstract
Hovering above the π-electron cloud, an anion positioned over hexafluorobenzene along the C6 axis as shown here interacts with the permanent quadrupole of the arene. Crystallographic and computational evidence demonstrate that anion–π interactions exist and are energetically favorable.
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