title: Phosphine-Stabilized Borylenes and Boryl Anions as Ligands? Redox Reactivity in Boron-Based Pincer Complexes.
abstract: Stabilized borylenes (L2BH:) with weakly π-accepting substituents L, such as phosphines, were previously believed to be unstable. In the current manuscript, we describe a series of complexes formally containing a phosphine-stabilized borylene or boryl anion. In contrast to common trivalent boron compounds, the boron-based ligands in this study act as electron-donating ligands. The reported iron hydride complexes exhibit a unique reactivity pattern, undergoing a reversible B-H reductive elimination concomitant with oxidation of the boron(I) center.
authors.affiliation: Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Strasse, 35032, Marburg, Germany.
authors.forename: Lisa
authors.initials: L
authors.lastname: Vondung
authors.affiliation: Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Strasse, 35032, Marburg, Germany.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Frank
authors.affiliation: Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Strasse, 35032, Marburg, Germany.
authors.forename: Maximilian
authors.initials: M
authors.lastname: Fritz
authors.affiliation: Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Strasse, 35032, Marburg, Germany.
authors.forename: Lukas
authors.initials: L
authors.lastname: Alig
authors.affiliation: Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Strasse, 35032, Marburg, Germany. robert.langer@chemie.uni-marburg.de.|Lehn Institute of Functional Material (LIFM), Sun Yat-Sen University Guangzhou (SYSU), Xingang Road West, Guangzhou, 510275, PR China. robert.langer@chemie.uni-marburg.de.
authors.forename: Robert
authors.identifier: 0000-0001-5746-9940
authors.initials: R
authors.lastname: Langer
keywords: boron; density functional theory; iron; pincer ligands; reduction