A Stable Manganese Pincer Catalyst for the Selective Dehydrogenation of Methanol

For the first time, structurally defined manganese pincer complexes catalyze the dehydrogenation of aqueous methanol to hydrogen and carbon dioxide, which is a transformation of interest with regard to the implementation of a hydrogen and methanol economy. Excellent long‐term stability was demonstrated for the Mn‐PNPiPr catalyst, as a turnover of more than 20 000 was reached. In addition to methanol, other important hydrogen carriers were also successfully dehydrogenated. In die Zange genommen: Ein bemerkenswert stabiler molekularer Komplex des nichttoxischen Elements Mangan mit einem PNP‐Liganden dehydriert Methanol selektiv unter Bildung von Wasserstoff und Kohlendioxid. Bei niedrigen Temperaturen werden hervorragende Umsatzzahlen (TON) über 20 000 erzielt, und der Katalysator war auch nach einem Monat noch aktiv.