Synthesis and Structural Characterization of a Stable Dimeric Boron(II) Dication

Bor-muda triangle: The first representative of a new type of boron cation is formed as the product of the reaction between B2Cl2(NMe2)2 and the guanidine derivative hppH (see scheme). The BB bond length is typical for a single bond, and both boron atoms and the hpp nitrogen atoms bound directly to them form a trigonal prism. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2007/z703616_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.