Current Work

 

 

[Results from the ERC project pCx4All are marked with *]

  

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 (61)*  H. Ruppert, A. Meister, R. Pfretzschner, A. F. Vieira, L. Greb

         Concatenating Structural Constraint Effects at Tin for the Sequential Generation, Stabilization, and Transfer of Acyclic Aminocarbenes.

         J. Am. Chem. Soc. 2024, ASAP.

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 (60)   P. Erdmann, M. Schmitt, L. M. Sigmund, F. Krämer, F. Breher, L. Greb

         How to Deal with Charge in the Ranking of Lewis Acidity: Critical Evaluation of an Extensive Set of Cationic Lewis Acids.

         Angew. Chem. Int. Ed. 2024, accepted article.

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  (59)   L. M. Sigmund, S. Sowndarya S. V., A. Albers, P. Erdmann, R. S. Paton, L. Greb

         Predicting Lewis Acidity: Machine-Learning the Fluoride Ion Affinity of p-Block-Atom-based Molecules.

         Angew. Chem. Int. Ed. 2024, accepted article.

         [Web application]    [GitHub repository]    [Dataset]

 

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(58)   S. R. Dash, H. Sharma, M. K. Tiwari, L. Greb, K. Vanka

         Size Matters: Computational Insights into the Crowning of Noble Gas Trioxides.

         Inorg. Chem. 2024, accepted article. 

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  (57)   N. Ansmann, K. Johann, P. Favresse, T. Johann, M. Fiedel, L. Greb

         Silicon Catalyzed Depolymerization of Polyethers: Pushing Scope, Practicability and Mechanistic Understanding.

         ChemCatChem 2024, accepted article.

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(56)   L. Kistner, L. M. Sigmund, F. F. Grieser, J. Krauß, S. Leingang, E. Kaifer, L. Greb, H.-J. Himmel

         Metal-Free B-B Dehydrocoupling Reaction of a Simple Borane Adduct: Convenient Access to a Nucleophilic Diborane(4)

         Angew. Chem. Int. Ed. 2023, 63, e202317462.

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(55)   N. Ansmann, J. Münch, M. Schorpp, L. Greb 

         Neutral and Anionic Square Planar Palladium(0) Complexes Stabilized by a Silicon Z-Type Ligand.

         Angew. Chem. Int. Ed. 2023, 62, e202313636.

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(54)   D. Roth, A. T. Radosevich, L. Greb 

         Reversible Oxidative Addition of Nonactivated C–H Bonds to Structurally Constrained Phosphenium Ions.

         J. Am. Chem. Soc. 2023, 145, 44, 24184 - 24190.

 

 

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(53)   T. Thorwart, L. Greb

         Reversible C−H Bond Silylation with a Neutral Silicon Lewis Acid.

         Chem. Sci. 2023, 14, 11237 - 11242.

 

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(52)*   A. Maiti⁺, R. Yadav⁺, L. Greb

         Structural constraint effects on p-block elements: Recent advances.

         Adv. Inorg. Chem. 2023.

         ⁺:These authors contributed equally to this work.

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 (51)*   R. Yadav⁺, P. Janßen⁺, M. Schorpp, L. Greb

         Calix[4]pyrrolato-germane-(thf)₂: Unlockingthe Anti-van’t Hoff−Le Bel Reactivity of Germanium(IV) by Ligand Dissociation.

         J. Am. Chem. Soc. 2023, 145, 32, 17746–17754.

         ⁺:These authors contributed equally to this work.

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(50)   L. Greb

         p-Block Element Catecholates: Lewis Superacidic, Constitutionally Dynamic and Redox-Active.

         Synlett 2023, doi: 10.1055/a-2122-8238.

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(49)  Q. Luo, L. Greb

         Catechol-Mediated Redox-Neutral One-pot Transformation of SiO2 into SiPh4.

         Eur. J. Inorg. Chem. 2023, 26, e202300186.

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(48)  S. Hollstein, P. Erdmann⁺, A. Ulmer⁺, H. Löw, L. Greb, M. von Delius

         Trialkoxysilane Exchange: Scope, Mechanism, Cryptates and pH-Response.

         Angew. Chem. Int. Ed. 2023, 62, e202304083.

         ⁺:These authors contributed equally to this work.

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(47)  R. Maskey, T. Thorwart, S. Ebel, A. Jocic, D. Hartmann, L. Greb

         Redox-Active Lewis Pairs Yield Diradicaloids and Enable Modular Control of the Diradical Character.

         Chem. Eur. J. 2023, e202300269.

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(46)  R. Maskey, L. Greb

         Catecholate Complexes of p-Block Elements: Redox Activity.

         Encyclopedia of Inorganic and Bioinorganic Chemistry 2022.

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(45)  D. Roth, T. Thorwart, C. Douglas, L. Greb

        Bis(amidophenolato)phosphonium: Si-H Hydride Abstraction and Phosphorous-Ligand Cooperative Activation of C-C Multiple Bonds.

        Chem. Eur. J. 2023, 29, e202203024.

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(44)  D. Hartmann, T. Strunden, L. Greb

        Silicon Carbamates by CO2 Fixation: Brønsted Acid Labile Precursor of a Lewis Superacid.

        Inorg. Chem. 2022, 61, 15693–15698.

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(43)  N. Ansmann, T. Thorwart, L. Greb

        Silicon Catalyzed C-O Bond Ring Closing Metathesis of Polyethers.

        Angew. Chem. Int. Ed. 2022, 61, e2022101.

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(42)*  L. M. Sigmund, E. Engels⁺, N. Richert⁺, L. Greb

        Calix[4]pyrrolato gallate: square planar-coordinated gallium(III) and its metal-ligand cooperative reactivity with CO₂ and alcohols.

        Chem. Sci. 2022, 13, 11215-11220.

         ⁺:These authors contributed equally to this work.

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(41)*  M. Schorpp⁺, R. Yadav⁺, D. Roth, L. Greb

        Calix[4]pyrrolato Stibenium: Lewis Superacidity by Antimony(III)-Antimony(V) Electromerism.

        Angew. Chem. Int. Ed. 2022, 61,  e2022079.

         ⁺:These authors contributed equally to this work.

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(40)  T. Thorwart, D. Hartmann, L. Greb

        Dihydrogen Activation with a Neutral, Intermolecular Silicon(IV)-Amine Frustrated Lewis Pair.

        Chem. Eur. J. 2022, 28,  e2022022.

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(39)  L. Greb, G. Vantomme, J.-M. Lehn

        Imines as Threefold Functional Devices: Motional, Photochemical, Constitutional.

        Molecular Photoswitches: Chemistry, Properties, and Applications, Volume 1 (Editor: Z. L. Pianowski, Wiley‐VCH).

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(38)*  L. M. Sigmund, C. Ehlert, G. Gryn’ova, L. Greb

        Stereoinversion of Tetrahedral p-Block Element Hydrides.

        J. Chem. Phys. 2022, 156, 194113.

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(37)  N. Ansmann⁺, D. Hartmann⁺, S. Sailer, P. Erdmann, R. Maskey, M. Schorpp, L. Greb

        Synthesis and Characterization of Hypercoordinated Silicon Anions: Catching Intermediates of Lewis Base Catalysis.

        Angew. Chem. Int. Ed. 2022, 61, e202203947.

         ⁺:These authors contributed equally to this work.

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(36)*  F. Schön⁺, L. M. Sigmund⁺, F. Schneider, D. Hartmann, M. A. Wiebe, I. Manners, L. Greb

        Calix[4]pyrrolato Aluminate Catalyzes the Dehydrocoupling of Phenylphosphine Borane to High Molar Weight Polymers.

        Angew. Chem. Int. Ed. 2022, 62, e202202176. Hot Paper!

         ⁺:These authors contributed equally to this work.

 

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(35)*  H. Ruppert, L. Greb

        Calix[4]pyrrolato Stannate(II): A Tetraamido Tin(II) Dianion and Strong Metal-Centered σ-Donor.

        Angew. Chem. Int. Ed. 2022, 61, e202116615.

 

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(34)  L. Greb

        Valence Tautomerism of p-Block Element Compounds – An Eligible Phenomenon for Main Group Catalysis?

        Eur. J. Inorg. Chem. 2022, e202100871.

 

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(33)*  L. M. Sigmund, R. Maier, L. Greb

        The Inversion of Tetrahedral p-Block Element Compounds: General Trends and the Relation to the Second-Order Jahn-Teller Effect.

        Chem. Sci. 2022, 13, 510-521.

 

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(32)  P. Erdmann, L. Greb

        What Distinguishes the Strength and the Effect of a Lewis Acid: Analysis of the Gutmann-Beckett Method.

        Angew. Chem. Int. Ed. 2022, 61, e202114550. Very Important Paper!

 

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(31)  D. Hartmann, T. Thorwart, R. Müller, J. Thusek, J. Schwabedissen, A. Mix, J.-H. Lamm, B. Neumann, N. W. Mitzel, L. Greb

        The Structure of Bis(catecholato)silanes: Phase Adaptation by Dynamic Covalent Chemistry of the Si–O Bond.

         J. Am. Chem. Soc. 2021, 143, 44, 18784-18793.

 

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 (30)*  H. Ruppert⁺, L. M. Sigmund⁺, L. Greb

         Calix[4]pyrroles as Ligands: Recent Progress with a Focus on the Emerging p-Block Element Chemistry.

         Chem. Commun. 2021, 57, 11751-11763.

         ⁺:These authors contributed equally to this work.

 

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(29)  F. S. Tschernuth, T. Thorwart, L. Greb, F. Hanusch, S. Inoue

         Bis(perfluoropinacolato)silane: A Neutral Silane Lewis Superacid Activates Si-F bonds.

         Angew. Chem. Int. Ed. 2021, 60, 25799–25803.

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(28)  D. Roth, J. Stirn, D. W. Stephan, L. Greb

        Lewis Superacidic Catecholato Phosphonium Ions: Phosphorus–Ligand Cooperative C–H Bond Activation.

        J. Am. Chem. Soc. 2021, 143, 38, 15845–15851.

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(27)  D. Hartmann, S. Braner, L. Greb

        Bis(perchlorocatecholato)silane and Heteroleptic Bidonors: Hidden Frustrated Lewis Pairs by Ring Strain.

        Chem. Comm. 2021, 57, 8572-8575.

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(26)*  F. Ebner, L. Greb

        An isolable, crystalline complex of square-planar silicon(IV).

        Chem 2021, 7, 2151-2159.

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(25)*  L. M. Sigmund, C. Ehlert, M. Enders, J. Graf, G. Gryn’ova, L. Greb

        Dioxygen Activation and Pyrrole α‐Cleavage with Calix[4]pyrrolato Aluminates: Enzyme Model by Structural Constraint.

        Angew. Chem. Int. Ed. 2021, 60, 15632–15640. Hot Paper!

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(24)  T. Thorwart, D. Roth, L. Greb

        Bis(pertrifluoromethylcatecholato)silane: Extreme Lewis Acidity Broadens the Catalytic Portfolio of Silicon.

        Chem. Eur. J. 2021, 27, 10422–10427 .

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(23)  T. Thorwart, L. Greb

         Lewis Superacids.

         Encyclopedia of Inorganic and Bioinorganic Chemistry 2021.

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(22)  P. Erdmann, L. Greb

        Multidimensional Lewis Acidity: A Consistent Data Set of Chloride, Hydride, Methide, Water and Ammonia Affinities for 183 p‐Block Element Lewis Acids.

        ChemPhysChem 2021, 22, 935-943.

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(21)*  F. Ebner, P. Mainik, L. Greb

        Calix[4]pyrrolato Aluminates: The Effect of Ligand Modification on the Reactivity of Square‐Planar Aluminum Anions.

        Chem. Eur. J. 2021, 27, 5120-5124.

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(20)  R. Maskey, C. Bendel, J. Malzacher, L. Greb

        Completing the Redox‐Series of Silicon Trisdioxolene: ortho‐Quinone and Lewis Superacid Make a Powerful Redox Catalyst.

        Chem. Eur. J. 2020, 26,17386-17389.

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(19)  H. Ruppert, L. Greb

        Bis(alizarinato)silane: In Silico Design and Synthesis of a Powerful Chromogenic Lewis Acid as a Dual-Gated Fluoride Ion Probe.

        Organometallics 2020, 39, 4340-4349.

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(18)*  L. M. Sigmund, L. Greb

        Reversible OH-bond activation and amphoterism by metal-ligand cooperativity of calix[4]pyrrolato aluminate.

        Chem. Sci. 2020, 11, 9611-9616.

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(17)  D. Hartmann, L. Greb

        [Si(O2C6F4)2]14: Self‐Assembly of a Giant Perfluorinated Macrocyclic Host by Low‐Barrier Si‐O Bond Metathesis.

        Angew. Chem. Int. Ed. 2020, 59, 22510-22513. Very Important Paper!

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 (16)  D. Roth, H. Wadepohl, L. Greb

        Bis(perchlorocatecholato)germane: Hard and Soft Lewis Superacid with Unlimited Water Stability.

        Angew. Chem. Int. Ed. 2020, 59, 20930-20934. Hot Paper!

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(15)  L. Greb, F. Ebner⁺, Y. Ginzburg⁺, L. M. Sigmund⁺ 

        Element-Ligand Cooperativity with p-Block Elements.

        Eur. J. Inorg. Chem. 2020, 3030-3047.  ​

  

         ⁺:These authors contributed equally to this work.

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​(14)*  F. Ebner, L. M. Sigmund, L. Greb

        Metal-Ligand Cooperativity of the Calix[4]pyrrolato Aluminate: Triggerable C-C Bond Formation and Rate Control in Catalysis.

        Angew. Chem. Int. Ed. 2020, 59, 17118-17124.  Hot Paper!

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(13)  P. Erdmann, J. Leitner, J. Schwarz, L. Greb

        An Extensive Set of Accurate Fluoride Ion Affinities for p‐Block Element Lewis Acids and Basic Design Principles for Strong Fluoride Ion Acceptors.

       ChemPhysChem 2020, 21, 1-9.

 

 

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(12)  F. Schön, L. Greb, E. Kaifer, H.-J. Himmel

        Desymmetrisation of Dicationic Diboranes by Isomerization Catalysed by a Nucleophile. 

        Angew. Chem. Int. Ed. 2020, 59, 2-9.

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(11)  L. M. Sigmund,⁺ F. Ebner,⁺ C. Jöst, J. Spengler, N. Gönnheimer, D. Hartmann, L. Greb

        An Air-stable, Neutral Phenothiazinyl Radical with Substantial Radical Stabilization Energy.

        Chem. Eur. J. 2020, 26, 3152-3156. Hot Paper!

         ⁺:These authors contributed equally to this work.

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(10)  F. Ebner, H. Wadepohl, L. Greb

        Calix[4]pyrrole aluminate: a planar tetracoordinate aluminum(III) anion and its unusual Lewis acidity.

        J. Am. Chem. Soc. 2019, 141, 45, 18009-18012.

        Highlighted as Cover Art!

        Featured in Science 2019, 366, 6469, 1091.

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(9)  D. Hartmann, M Schädler, L. Greb

      Bis(catecholato)silanes: assessing, rationalizing and increasing silicon's Lewis superacidity.

      Chem. Sci. 2019, 10, 7379-7388 .

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(8)  F. Schön, F. Biebl, L. Greb, S. Leingang, B. Grimm-Lebsanft, M. Teubner, S. Buchenau, E. Kaifer, M. A. Rübhausen, H.-J. Himmel

      On the Metal Cooperativity in a Dinuclear Copper-Guanidine Complex for aliphatic C-H Bond Cleavage by Dioxygen.

      Chem. Eur. J. 2019, 25,1-13.

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(7)  N. Kramer, H. Wadepohl, L. Greb

      Tris(dimethylamino)silylium ion: structure and reactivity of a dimeric silaguanidinium. 

      Chem. Comm. 2019, 55, 7764-7767.

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(6)  R. Maskey, H. Wadepohl, L. Greb

      Silicon Tris(perchloro)dioxolene: A Neutral Triplet Diradical.

      Angew. Chem. Int. Ed. 2019, 58, 3616-3619.

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(5)  F. Ebner, L. Greb

      Calix[4]pyrrole Hydridosilicate: The Elusive Planar Tetracoordinate Silicon Imparts Striking Stability to Its Anionic Silicon Hydride.

      J. Am. Chem. Soc. 2018, 140, 50, 17409-17412.

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(4)  U. Wild, O. Hübner, L. Greb, M. Enders, E. Kaifer, H.-J. Himmel

      Twofold Oxidized and Twofold Protonated Redox‐Active Guanidine: An Ultimate Intermediate in Proton‐Coupled Electron‐Transfer Reactions.

      Eur. J. Org. Chem. 2018, 2018, 5910-5915.

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(3)  L. Greb

      Lewis Superacids: Classifications, Candidates and Applications.

      Chem. Eur. J. 2018, 24, 17881-17896.

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(2)  R. Maskey, M. Schädler, C. Legler, L. Greb

      Bis(perchlorocatecholato)silane — A Neutral Silicon Lewis Super Acid.

      Angew. Chem. Int. Ed. 2018, 57, 1717-1720.

Previous Work

 

 

(12) Greb, L.; Eichhöfer, A.; Lehn, J.-M., Internal C-C bond rotation in photoisomers of α-bisimines: a light responsive two-step molecular speed regulator based on double imine photoswitching. Eur. J. Org. Chem. 2016, 1243.

 

(11) Greb, L.; Mutlu, H.; Barner-Kowollik, C., Lehn, J.-M., Photo- and Metallo-responsive N-Alkyl alpha-Bisimines as Orthogonally Addressable Main-Chain Functional Groups in Metathesis Polymers. J. Am. Chem. Soc. 2016, 138, 1142.

 

(10) Tussing, S.; Greb, L.; Tamke, S.; Schirmer, B.; Muhle-Goll, C.; Luy, B.; Paradies, J., Autoinduced Catalysis and Inverse Equilibrium Isotope Effect in the Frustrated Lewis Pair Catalyzed Hydrogenation of Imines. Chem. Eur. J. 2015, 21, 8056.

 

(9) Greb, L.; Eichhöfer, A.; Lehn, J.-M., Synthetic Molecular Motors: Thermal N Inversion and Directional Photoinduced C=N Bond Rotation of Camphorquinone Imines. Angew. Chem. Int. Ed., 2015, 54, 14345.

 

(8) Hoerner, A.; Volz, D.; Hagendorn, T.; Fuerniss, D.; Greb, L.; Roenicke, F.; Nieger, M.; Schepers, U.; Braese, S., Switchable fluorescence by click reaction of a novel azidocarbazole dye. RSC Adv. 2014, 4, 11528.

 

(7) Greb, L.; Tamke, S.; Paradies, J., Catalytic metal-free Si-N cross-dehydrocoupling. Chem. Comm. 2014, 50, 2318.

 

(6) Greb, L.; Lehn, J.-M., Light-Driven Molecular Motors: lmines as Four-Step or Two-Step Unidirectional Rotors. J. Am. Chem. Soc. 2014, 136, 13114.

 

(5) Greb, L.; Tussing, S.; Schirmer, B.; Ona-Burgos, P.; Kaupmees, K.; Lokov, M.; Leito, I.; Grimme, S.; Paradies, J., Electronic effects of triarylphosphines in metal-free hydrogen activation: a kinetic and computational study. Chem. Sci. 2013, 4, 2788.

 

(4) Greb, L.; Paradies, J.; Erker, G.; Stephan, D., Paracyclophane Derivatives in Frustrated Lewis Pair Chemistry. Top. Curr. Chem., Frustrated Lewis Pairs II: Expanding the Scope 2013, 334, 81.

 

(3) Greb, L.; Daniliuc, C.-G.; Bergander, K.; Paradies, J., Functional-Group Tolerance in Frustrated Lewis Pairs: Hydrogenation of Nitroolefins and Acrylates. Angew. Chem. Int. Ed. 2013, 52, 5876.

 

(2) Greb, L.; Ona-Burgos, P.; Schirmer, B.; Grimme, S.; Stephan, D. W.; Paradies, J., Metal-free Catalytic Olefin Hydrogenation: Low-Temperature H₂ Activation by Frustrated Lewis Pairs. Angew. Chem. Int. Ed. 2012, 51, 10164.

 

(1) Greb, L.; Ona-Burgos, P.; Kubas, A.; Falk, F. C.; Breher, F.; Fink, K.; Paradies, J., [2.2]Paracyclophane derived bisphosphines for the activation of hydrogen by FLPs: application in domino hydrosilylation/hydrogenation of enones. Dalt. Trans. 2012, 41, 9056.

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