Gregor Schnakenburg

Light-Enhanced Synthesis of TiSb2 and TiBi2 Metallacycles

Matthias Bollenbeck, Floria A. E. Hojer, Rosa M. Gomila, Gregor Schnakenburg et autres

Abstract The synthesis of small metallacycles of early transition metals and heavy pnictogens has been primarily achieved by reductive coupling of the pnictane moiety with a transition metal fragment. Herein, we report a light-enhanced synthesis of titanocene Sb2 and Bi2 metallacycles starting …

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Iron‐Photocatalyzed Alkene Chloroaminoxylation: A Platform for Orthogonally Activatable Building Blocks

Amrita Chaudhuri, Meghana Aladahalli Shekar, Mohammad Zafar, Marianne Engeser et autres

ABSTRACT We report the development of an iron‐photocatalyzed 1,2‐chloroaminoxylation of alkenes that installs two orthogonal and independently activatable synthetic handles, a chlorine atom and an alkoxyamino group, across a diverse range of alkene substrates. The reaction is driven by iron's ability to …

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Iron‐Photocatalyzed Alkene Chloroaminoxylation: A Platform for Orthogonally Activatable Building Blocks

Amrita Chaudhuri, Meghana Aladahalli Shekar, Mohammad Zafar, Marianne Engeser et autres

We report the development of an iron-photocatalyzed 1,2-chloroaminoxylation of alkenes that installs two orthogonal and independently activatable synthetic handles, a chlorine atom and an alkoxyamino group, across a diverse range of alkene substrates. The reaction is driven by iron's ability to generate …

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Photochemical and Thermal Activation of a Diarylbismuth Azide

Giacomo Pugliese, Oliver Pichl, Gregor Schnakenburg, Peter Vöhringer et autres

ABSTRACT Azides are widely employed in synthesis as convenient nitrene precursors, particularly in transition‐metal chemistry, where metal–nitrene intermediates enable diverse C─H amination, aziridination, and atom‐transfer processes. In stark contrast, main‐group azides, especially bismuth ones, are underrepresented and have not been fully exploited …

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Unraveling Terminal Cobalt–Antimony Double Bond: Breaking New Ground in Heavy Pnictogen Multiple Bonds

Daniel Meleschko, Prasenjit Palui, Rosa M. Gomilia, Morgan J. McKee et autres

ABSTRACT Terminal pnictinidene complexes featuring heavy group 15 elements (Sb, Bi) doubly bonded to transition metals remain exceptionally elusive compared to their lighter congeners. Herein, we demonstrate that N‐heterocyclic carbenes (NHCs) can effectively cleave the Sb═Sb double bond of distibenes to yield …

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Unraveling Terminal Cobalt–Antimony Double Bond: Breaking New Ground in Heavy Pnictogen Multiple Bonds

Daniel Meleschko, Prasenjit Palui, Rosa M. Gomilia, Morgan J. McKee et autres

Terminal pnictinidene complexes featuring heavy group 15 elements (Sb, Bi) doubly bonded to transition metals remain exceptionally elusive compared to their lighter congeners. Herein, we demonstrate that N-heterocyclic carbenes (NHCs) can effectively cleave the Sb═Sb double bond of distibenes to yield monomeric, …

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Conformation-Guided Remote C–H Functionalization of Aromatic Compounds

Anup Mandal, Clemens Maurer, Mohammad Zafar, Amrita Chaudhuri et autres

Achieving site-selective C-H functionalization at remote, unbiased positions of the aromatic ring remains a major challenge in the field. We report a conformational control strategy that enables remote meta-selective C-H borylation of mono- and 1,2-disubstituted (poly)arenes via arene π-complexation with Cr(CO)3. The …

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π‐Extended Salphen Scaffolds Enable CO 2 Electroreduction and Singlet Oxygen Generation

Vincenzo Langellotti, André Korzun, Morgan McKee, Massimo Melchiorre et autres

ABSTRACT π‐Extended conjugation offers the opportunity to unveil new frontiers in materials, coupling redox activity with tunable photophysical properties. Here, we report a new family of π‐conjugated salen ligands bearing phenylene bridges and tunable substituents, together with their corresponding boron difluoride complexes. …

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Correction to: Mono‐, Di‐, and Trinuclear Complex Anions of RuF 5 in Rb[RuF 6 ], Cs[Ru 2 F 11 ], and [O 2 ][Ru 3 F 16 ]

Björn Koch, Tim Graubner, Antti J. Karttunen, Gregor Schnakenburg et autres

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Failed Attempts at Oxidation of XeF 6 : Synthesis and Characterization of [Xe 2 F 11 ][RuF 6 ]

Björn Koch, Giuliana Hoß, Gregor Schnakenburg, Antti J. Karttunen et autres

High Resolution Image Download MS PowerPoint Slide Herein we report our attempts to oxidize XeF 6 using RuF 6 in anhydrous HF (aHF) under various conditions. Contrary to expectations of forming a Xe(VIII) species such as [XeF 7 ] +, the reactions …

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Dual Activation of H 2 and CO 2 by a Pincer‐Type Ni–Zn Heterobimetallic Complex

Krishnendu Dey, Matthias Borowski, Gregor Schnakenburg, Connie C. Lu

ABSTRACT Various Ni‐based metalloenzymes employ synergistic heterometallic cooperativity where a Ni center and a second metal ion cofacilitate small‐molecule conversion. Inspired by these biological systems, synthetic model complexes have been developed that exploit bimetallic cooperativity to achieve analogous reactivity. In this work, …

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Dual Activation of H 2 and CO 2 by a Pincer‐Type Ni–Zn Heterobimetallic Complex

Krishnendu Dey, Matthias Borowski, Gregor Schnakenburg, Connie C. Lu

ABSTRACT Various Ni‐based metalloenzymes employ synergistic heterometallic cooperativity where a Ni center and a second metal ion cofacilitate small‐molecule conversion. Inspired by these biological systems, synthetic model complexes have been developed that exploit bimetallic cooperativity to achieve analogous reactivity. In this work, …

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