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Ein Ansa‐Aminoboran …︁ …︁ , ein intramolekulares frustriertes Lewis‐Paar mit einer sehr kleinen sauren Boryleinheit (BH2), liegt in Lösung vorwiegend in seiner unreaktiven dimeren Form vor. Im Gleichgewicht ist außerdem die monomere Spezies vorhanden, die Wasserstoff aktivieren kann. In ihrer Zuschrift auf S. 1769 ff. beschreiben I. Pápai, T. Repo et al. die Einzelheiten der Reaktivität dieses frustrierten...
Ansa‐aminoborane 1 (ortho‐TMPC6H4BH2; TMP=2,2,6,6‐tetramethylpiperid‐1‐yl), a frustrated Lewis pair with the smallest possible Lewis acidic boryl site (BH2), is prepared. Although it is present in quenched forms in solution, and BH2 represents an acidic site with reduced hydride affinity, 1 reacts with H2 under mild conditions producing ansa‐ammonium trihydroborate 2. The thermodynamic and kinetic...
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