Structural evidence for antiaromaticity in free boroles

…, I Fernández, G Frenking, T Kupfer

Index: Braunschweig, Holger; Fernandez, Israel; Frenking, Gernot; Kupfer, Thomas Angewandte Chemie - International Edition, 2008 , vol. 47, # 10 p. 1951 - 1954

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Citation Number: 107

Abstract

Unsaturated boron-containing heterocycles such as borirenes (I),[1] boroles (II),[2] and borepins (III)[3] have attracted fundamental interest owing to their electronic structure. The interaction of the empty pz orbital at boron in these systems with the unsaturated carbon backbone might result in a stabilization (I and III) or destabilization (II) of the entire π system, depending on the number of available π electrons. In particular, boroles (II) are of interest ...