From Borapyramidane to Borole Dianion

J Am Chem Soc. 2018 May 16;140(19):6053-6056. doi: 10.1021/jacs.8b03473. Epub 2018 May 2.

Abstract

Nonclassical pyramidanes with their inverted tetrahedral configuration of the apical atom are among the most challenging synthetic targets in cluster chemistry. In this Communication, we report on the synthesis and structure of the first representative of pyramidal compounds with the group 13 element at the apex, namely, chloroborapyramidane 2. Reduction of 2 with excess of lithium metal unexpectedly produced the cage-opening product, borole dianion derivative {32-·[Li(thf)+]2}, a 6π-electron aromatic system.

Publication types

  • Research Support, Non-U.S. Gov't