Structural Evidence for Singly Hydrogen-Bridged Boranes. Their Relationship to Symmetrical and Unsymmetrical Cleavage Reactions of Diborane

Ab initio study of the formation of aminoborane from ammonia and diborane

“…The NH3(BH3)2 complex has reportedly been prepared and its boron-11 NMR spectra measured at -25 to -60 °C by Shore and Hall. 20 The evidence is consistent with a singly hydrogen-bridged boron.…”

Anionic Oligomerization as a Route to Chain Clusters

“…Neutral Lewis bases usually react with 1 to give unstable addition derivatives, [30] as observed for diborane. [31] Anionic X À reactants give more stable [Re 2 HX(m-H)(CO) 8 ] À anions, [23,32] in which one of the bridging hydrides of 1 has moved to a terminal location (Scheme 8). It was subsequently Scheme 8.…”

Nuclear magnetic resonance spectrometry

“…B series of B10H12 (ligand)* compounds is described (994). Structures originally proposed as R3X:BH2-H-BH3 (1893) are reinterpreted as not being singly hydrogenbridged (562). 1113 and proton spectra are given for PH3BH3 (1 796) and fluorophosphine boranes described (1795). d reinterpretation of the llB spectrum of tetraborane, based on llB, lOB, and H spectra, as well as l l B ( H } double resonance, provides evidence for a bond between the two borons in B H groups (967).…”