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Kounalis E, van Tongeren D, Melnikov S, Lutz M, Broere DLJ. Pendulum-like hemilability in a Ti-based frustrated Lewis Trio. Chem Sci 2024; 15:5555-5563. [PMID: 38638227 PMCID: PMC11023062 DOI: 10.1039/d3sc06789k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 03/08/2024] [Indexed: 04/20/2024] Open
Abstract
We describe the first experimental example of a theoretically predicted Frustrated Lewis Trio (FLT). A tetradentate PNNP ligand is used to stabilise a highly electrophilic [TiCl3]+ fragment in a way that results in two equally long and frustrated Ti-P bonds. A combined experimental and computational approach revealed a distinct role of each Lewis basic phosphine in the heterolytic activation of chemical bonds. This dual functionality is characterised by a pendulum-like hemilability, where one of the phosphines acts as a nucleophile while the other serves as a hemilabile ligand that dynamically tunes the Ti-P distance as a function of the required electron density at the Ti centre.
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Affiliation(s)
- Errikos Kounalis
- Organic Chemistry and Catalysis, Institute for Sustainable and Circular Chemistry, Faculty of Science, Utrecht University, Universiteitsweg 99 3584 CG Utrecht The Netherlands
| | - Dylan van Tongeren
- Organic Chemistry and Catalysis, Institute for Sustainable and Circular Chemistry, Faculty of Science, Utrecht University, Universiteitsweg 99 3584 CG Utrecht The Netherlands
| | - Stanislav Melnikov
- Organic Chemistry and Catalysis, Institute for Sustainable and Circular Chemistry, Faculty of Science, Utrecht University, Universiteitsweg 99 3584 CG Utrecht The Netherlands
| | - Martin Lutz
- Structural Biochemistry Bijvoet Centre for Biomolecular Research, Faculty of Science, Utrecht University, Universiteitsweg 99 3584 CG Utrecht The Netherlands
| | - Daniël L J Broere
- Organic Chemistry and Catalysis, Institute for Sustainable and Circular Chemistry, Faculty of Science, Utrecht University, Universiteitsweg 99 3584 CG Utrecht The Netherlands
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2
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Schwitalla K, Lee W, Fischer M, Schmidtmann M, Beckhaus R. Synthesis and Characterization of Zr and Hf Triazenido Complexes with Rare κ 1N-Coordination Built Directly in the Coordination Sphere of the Metal. Organometallics 2023. [DOI: 10.1021/acs.organomet.2c00588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Kevin Schwitalla
- MSc. K. Schwitalla, Institut für Chemie, Carl von Ossietzky Universität Oldenburg, D-26111 Oldenburg, Federal Republic of Germany
| | - Wing Lee
- BSc. Wing Lee, Institut für Chemie, Carl von Ossietzky Universität Oldenburg, D-26111 Oldenburg, Federal Republic of Germany
| | - Malte Fischer
- Dr. Malte. Fischer Institut für Anorganische Chemie und Kristallographie, Universität Bremen, Leobener Straße 7, D-28359 Bremen, Germany
| | - Marc Schmidtmann
- Dr. M. Schmidtmann, Institut für Chemie, Carl von Ossietzky Universität Oldenburg, D-26111 Oldenburg, Federal Republic of Germany
| | - Rüdiger Beckhaus
- Prof. Dr. R. Beckhaus, Institut für Chemie, Carl von Ossietzky Universität Oldenburg, D-26111 Oldenburg, Federal Republic of Germany
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3
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Hammouda MM, Elattar KM. Recent progress in the chemistry of β-aminoketones. RSC Adv 2022; 12:24681-24712. [PMID: 36128366 PMCID: PMC9428906 DOI: 10.1039/d2ra03864a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 08/17/2022] [Indexed: 11/21/2022] Open
Abstract
The current study highlighted the significance of β-aminoketones as privileged biologically active molecules, recent synthetic strategies, and synthetic applications.
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Affiliation(s)
- Mohamed M. Hammouda
- Department of Chemistry, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University, Al-Kharj, 11942, Saudi Arabia
- Chemistry Department, Faculty of Science, Mansoura University, El-Gomhoria Street, Mansoura, 35516, Egypt
| | - Khaled M. Elattar
- Unit of Genetic Engineering and Biotechnology, Faculty of Science, Mansoura University, El-Gomhoria Street, Mansoura, 35516, Egypt
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4
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de Graaff S, Schwitalla K, Haaker CV, Bengen N, Schmidtmann M, Beckhaus R. A Niobium Pentafulvene Ethylene Complex: Synthesis, Properties and Reaction Pathways. Dalton Trans 2022; 51:12502-12511. [DOI: 10.1039/d2dt02063g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The π-η5:σ-η1 coordination mode of early transition metal pentafulvene ligands yields a strongly nucleophilic exocyclic carbon atom (Cexo). The substitution of the chlorido ligand of bis(η5:η1-(di-p-tolyl)pentafulvene)niobium chloride (1) by reaction...
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5
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Chatterjee B, Chang WC, Jena S, Werlé C. Implementation of Cooperative Designs in Polarized Transition Metal Systems—Significance for Bond Activation and Catalysis. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03794] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Basujit Chatterjee
- Max Planck Institute for Chemical Energy Conversion, Stiftstr. 34−36, 45470 Mülheim an der Ruhr, Germany
- Ruhr University Bochum, Universitätsstr. 150, 44801 Bochum, Germany
| | - Wei-Chieh Chang
- Max Planck Institute for Chemical Energy Conversion, Stiftstr. 34−36, 45470 Mülheim an der Ruhr, Germany
- Ruhr University Bochum, Universitätsstr. 150, 44801 Bochum, Germany
| | - Soumyashree Jena
- Max Planck Institute for Chemical Energy Conversion, Stiftstr. 34−36, 45470 Mülheim an der Ruhr, Germany
- Ruhr University Bochum, Universitätsstr. 150, 44801 Bochum, Germany
| | - Christophe Werlé
- Max Planck Institute for Chemical Energy Conversion, Stiftstr. 34−36, 45470 Mülheim an der Ruhr, Germany
- Ruhr University Bochum, Universitätsstr. 150, 44801 Bochum, Germany
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6
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Fischer M, Fitschen K, Schmidtmann M, Beckhaus R. Reactivity Studies of a Bis(π-η5:σ-η1-benzofulvene)titanium Complex Including Simultaneous N–H and C(sp2)–H Activation of Dibenzylamine. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00487] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Malte Fischer
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, D-26111 Oldenburg, Federal Republic of Germany
| | - Kerstin Fitschen
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, D-26111 Oldenburg, Federal Republic of Germany
| | - Marc Schmidtmann
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, D-26111 Oldenburg, Federal Republic of Germany
| | - Rüdiger Beckhaus
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, D-26111 Oldenburg, Federal Republic of Germany
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7
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Fischer M, Barbul D, Schmidtmann M, Beckhaus R. Unexpected Selective Methyl Group Abstractions from SiMe
3
Moieties of CH
2
SiMe
3
Ligands To Give New Cationic Titanium Complexes. Chemistry 2019; 25:7119-7130. [DOI: 10.1002/chem.201900599] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Malte Fischer
- Institut für ChemieFakultät für Mathematik und NaturwissenschaftenCarl von Ossietzky Universität Oldenburg Postfach 2503 26111 Oldenburg Germany
| | - Daniel Barbul
- Institut für ChemieFakultät für Mathematik und NaturwissenschaftenCarl von Ossietzky Universität Oldenburg Postfach 2503 26111 Oldenburg Germany
| | - Marc Schmidtmann
- Institut für ChemieFakultät für Mathematik und NaturwissenschaftenCarl von Ossietzky Universität Oldenburg Postfach 2503 26111 Oldenburg Germany
| | - Ruediger Beckhaus
- Institut für ChemieFakultät für Mathematik und NaturwissenschaftenCarl von Ossietzky Universität Oldenburg Postfach 2503 26111 Oldenburg Germany
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8
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Fischer M, Schmidtmann M, Beckhaus R. To Coordinate or not to Coordinate: The Special Role of Chalcogen Ether Functionalities in the Design of Twofold Functionalized Cyclopentadienyl Ligands [Cp,O,Ch
(Ch
= S, Se)]. Z Anorg Allg Chem 2019. [DOI: 10.1002/zaac.201900012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Malte Fischer
- Institut für Chemie; Fakultät für Mathematik und Naturwissenschaften; Carl von Ossietzky Universität Oldenburg; 26111 Oldenburg Germany
| | - Marc Schmidtmann
- Institut für Chemie; Fakultät für Mathematik und Naturwissenschaften; Carl von Ossietzky Universität Oldenburg; 26111 Oldenburg Germany
| | - Ruediger Beckhaus
- Institut für Chemie; Fakultät für Mathematik und Naturwissenschaften; Carl von Ossietzky Universität Oldenburg; 26111 Oldenburg Germany
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Yao T, Xu P, Xu X. Scandium complexes containing β-diketiminato ligands with pendant phosphanyl groups: competition between Sc/γ-C [4 + 2] cycloaddition and Sc/P frustrated Lewis pair reactions. Dalton Trans 2019; 48:7743-7754. [DOI: 10.1039/c9dt01035a] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Scandium complexes based on β-diketimine bearing a phosphanyl group show divergent reaction pathways toward phenyl isocyanate, namely Sc/γ-C [4 + 2] cycloaddition and Sc/P FLP reactions.
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Affiliation(s)
- Tu Yao
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- 215123 Suzhou
| | - Pengfei Xu
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- 215123 Suzhou
| | - Xin Xu
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- 215123 Suzhou
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