Synthesis of a Stable B₂H₅⁺ Analogue by Protonation of a Double Base‐Stabilized Diborane(4)

Abstract

Polarity of H+ reversed: The synthesis of [B2H3(hpp)2]+I−,a dinuclear borohydride with terminal and bridging H atoms (see picture; B yellow, N blue, C gray, H white, I purple), is made possible with the ligand hexahydropyrimidopyrimidate (hpp). In the course of the reaction the proton is converted into a hydride. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. 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.