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Szlosek R, Niefanger AS, Balázs G, Seidl M, Timoshkin AY, Scheer M. Characterization of the Ligand Properties of Donor-stabilized Pnictogenyltrielanes. Chemistry 2024; 30:e202303603. [PMID: 38131435 DOI: 10.1002/chem.202303603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/15/2023] [Accepted: 12/21/2023] [Indexed: 12/23/2023]
Abstract
A general synthesis and the characterization of novel alkyl-substituted NHC-stabilized pnictogenylboranes NHC ⋅ BH2 ER2 (NHC=N-heterocyclic carbene, E=P, As; R2 =Me2 , Ph2 , t BuH, Cy2 , (SiMe3 )2 ) are reported. These compounds were reacted with Ni(CO)4 to the corresponding complexes of the type [(NHC ⋅ BH2 ER2 )Ni(CO)3 ] to determine their donor strength by Tolman Electronic Parameters (TEPs) and their steric demand as ligands compared to classical phosphines, superbasic phosphines and other commonly applied donor systems. The results show that the NHC-stabilized pnictogenyltrielanes can be considered as being highly basic, while their steric influence depends strongly on the organic residues as well as the donor attached to the {BH2 } moiety. Although weaker than commonly used superbasic phosphines, the donor strength of pnictogenyltrielanes in general can be classified as of similar strength as NHCs. The steric and electronic properties can easily be modified by alkyl substitution as evident from the TEP trends.
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Affiliation(s)
- Robert Szlosek
- Institut für Anorganische Chemie, Universität Regensburg, 93053, Regensburg, Germany
| | | | - Gábor Balázs
- Institut für Anorganische Chemie, Universität Regensburg, 93053, Regensburg, Germany
| | - Michael Seidl
- Institute of General and Theoretical Chemistry, Leopold-Franzens Universität Innsbruck, Innrain 80-82, 6020, Innsbruck, Austria
| | - Alexey Y Timoshkin
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya emb. 7/9, 199034, St. Petersburg, Russia
| | - Manfred Scheer
- Institut für Anorganische Chemie, Universität Regensburg, 93053, Regensburg, Germany
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2
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Iemhoff A, Vennewald M, Palkovits R. Single-Atom Catalysts on Covalent Triazine Frameworks: at the Crossroad between Homogeneous and Heterogeneous Catalysis. Angew Chem Int Ed Engl 2023; 62:e202212015. [PMID: 36108176 PMCID: PMC10108136 DOI: 10.1002/anie.202212015] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 09/14/2022] [Accepted: 09/14/2022] [Indexed: 02/04/2023]
Abstract
Heterogeneous single-site and single-atom catalysts potentially enable combining the high catalytic activity and selectivity of molecular catalysts with the easy continuous operation and recycling of solid catalysts. In recent years, covalent triazine frameworks (CTFs) found increasing attention as support materials for particulate and isolated metal species. Bearing a high fraction of nitrogen sites, they allow coordinating molecular metal species and stabilizing particulate metal species, respectively. Dependent on synthesis method and pretreatment of CTFs, materials resembling well-defined highly crosslinked polymers or materials comparable to structurally ill-defined nitrogen-containing carbons result. Accordingly, CTFs serve as model systems elucidating the interaction of single-site, single-atom and particulate metal species with such supports. Factors influencing the transition between molecular and particulate systems are discussed to allow deriving tailored catalyst systems.
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Affiliation(s)
- Andree Iemhoff
- Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 2, 52074, Aachen, Germany
| | - Maurice Vennewald
- Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 2, 52074, Aachen, Germany
| | - Regina Palkovits
- Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Worringerweg 2, 52074, Aachen, Germany.,Max-Planck-Institute for Chemical Energy Conversion, Stiftstrasse 34, 45470, Mülheim an der Ruhr, Germany
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3
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Manick AD, Dutasta JP, Nava P, Dufaud V, Gao G, Chatelet B, Martinez A. Synthesis, Characterizations and Applications of Fluoroazaphosphatranes. Chem Asian J 2022; 17:e202200115. [PMID: 35363422 DOI: 10.1002/asia.202200115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 03/08/2022] [Indexed: 11/12/2022]
Abstract
Haloazaphosphatranes are the halogenated parents of proazaphosphatranes, also known as Verkade's superbase. While the synthesis of iodo-, bromo- and chloroazaphosphatranes was reported more than thirty years ago by J. G. Verkade, the first synthesis of fluoroazaphosphatranes was only described in 2018 by Stephan et al. Currently, no common and versatile procedure exists to access fluoroazaphosphatranes platform with different structural characteristics. In this report, a new and simple synthesis of this class of compounds was developed based on the nucleophilic attack of the fluoride anion on chloroazaphosphatrane derivatives with good to high isolated yields for the corresponding fluoroazaphosphatranes (70-92%). The scope of the reaction was widened to fluoroazaphosphatranes bearing various substituents and X-ray molecular structures of two of them are reported. The stability of fluoroazaphosphatranes toward nucleophilic solvents like water has been investigated. As they revealed much more robust cations than their chloroazaphosphatrane parents, their chloride salts were tested as organocatalysts for the formation of cyclic carbonates from epoxides and CO2 . Fluoroazaphosphatranes proved to be both efficient and stable catalytic systems for CO2 conversion with catalytic activities similar to those of azaphosphatranes, and no decomposition of the cation was observed at the end of reaction.
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Affiliation(s)
| | - Jean-Pierre Dutasta
- Laboratoire de Chimie, École Normale Supérieure de Lyon, CNRS, 46 allée d'Italie, 69364, Lyon, France
| | - Paola Nava
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Véronique Dufaud
- Laboratoire de Chimie, Catalyse, Polymères, Procédés, CNRS UMR 5265, Université Claude Bernard Lyon1, CPE Lyon, 43 Bd du 11 novembre 1918, 69616, Villeurbanne cedex, France
| | - Guohua Gao
- Shanghia Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, Shanghai, P. R. China
| | - Bastien Chatelet
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
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4
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Yu JK, Czekelius C. Insights into the Gold‐catalyzed Cycloisomerization of 3‐Allyl‐1,4‐diynes for the Synthesis of Bicyclic Hydrocarbons. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jhen-Kuei Yu
- Heinrich Heine University Düsseldorf: Heinrich-Heine-Universitat Dusseldorf Chemistry GERMANY
| | - Constantin Czekelius
- Heinrich-Heine-Universitat Dusseldorf Organic Chemistry II Building 26.33Room U1.33Universitaetsstrasse 1 40225 Duesseldorf GERMANY
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5
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Li C, Manick AD, Yang J, Givaudan D, Biletskyi B, Michaud-Chevalier S, Dutasta JP, Hérault D, Bugaut X, Chatelet B, Martinez A. The Chloroazaphosphatrane Motif for Halogen Bonding in Solution. Inorg Chem 2021; 60:11964-11973. [PMID: 34319095 DOI: 10.1021/acs.inorgchem.1c01005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Chloroazaphosphatranes, the corresponding halogenophosphonium cations of the Verkade superbases, were evaluated as a new motif for halogen bonding (XB). Their modulable synthesis allowed for synthetizing chloroazaphosphatranes with various substituents on the nitrogen atoms. The binding constants determined from NMR titration experiments for Cl-, Br-, I-, AcO-, and CN- anions are comparable to those obtained with conventional iodine-based monodentate XB receptors. Remarkably, the protonated azaphosphatrane counterparts display no affinity for anions under the same conditions. The strength of the XB interaction is, to some extent, related to the basicity of the corresponding Verkade superbase. The halogen bonding abilities of this new class of halogen donor motif were also revealed by the Δδ(31P) NMR shift observed in CD2Cl2 solution in the presence of triethylphosphine oxide (TEPO). Thus, chloroazaphosphatranes constitute a new class of halogen bond donors, expanding the repertory of XB motifs mainly based on CAr-I bonds.
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Affiliation(s)
- Chunyang Li
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
| | | | - Jian Yang
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - David Givaudan
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Bohdan Biletskyi
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
| | | | - Jean-Pierre Dutasta
- Laboratoire de Chimie, École Normale Supérieure de Lyon, CNRS, 46 allée d'Italie, F-69364 Lyon, France
| | - Damien Hérault
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Xavier Bugaut
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Bastien Chatelet
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
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6
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Chang WC, Deufel F, Weyhermüller T, Farès C, Werlé C. Rhodium( i) complexes derived from tris(isopropyl)-azaphosphatrane—controlling the metal–ligand interplay. RSC Adv 2021; 11:37383-37391. [PMID: 35496436 PMCID: PMC9043836 DOI: 10.1039/d1ra07126b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 11/06/2021] [Indexed: 01/24/2023] Open
Abstract
Proazaphosphatranes are intriguing ligand architectures comprising a bicyclic cage of flexible nature. They can undergo structural deformations due to transannulation while displaying modular electronic and steric properties. Herein, we report the synthesis and coordination chemistry of rhodium(i) complexes bearing a tris(isopropyl)-azaphosphatrane (TiPrAP) ligand. The molecular structure of the primary complex (1) revealed the insertion of the metal center into a P–N bond of the ligand. The addition of a Lewis acid, i.e., lithium chloride, promoted the dynamic behavior of the complex in the solution, which was studied by state-of-the-art NMR spectroscopy. Substituting the cyclooctadiene ligand at the metal center with triphenylphosphine or 2-pyridyldiphenylphosphine unveiled the adaptive nature of the TiPrAP backbone capable of switching its axial nitrogen from interacting with the phosphorus atom to coordinate the rhodium center. This led the entire ligand edifice to change its binding to rhodium from a bidentate to tridentate coordination. Altogether, our study shows that introducing a TiPrAP ligand allows for unique molecular control of the immediate environment of the metal center, opening perspectives in controlled bond activation and catalysis. The synthesis and coordination chemistry of Rh(i) complexes bearing a tris(isopropyl)-azaphosphatrane (TiPrAP) ligand are reported. The adaptive nature of TiPrAP ligands allows for molecular control of the immediate environment of the metal center.![]()
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Affiliation(s)
- 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
| | - Fritz Deufel
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany
| | - Thomas Weyhermüller
- Max Planck Institute for Chemical Energy Conversion, Stiftstr. 34–36, 45470 Mülheim an der Ruhr, Germany
| | - Christophe Farès
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, 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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7
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Yang J, Manick A, Li C, Bugaut X, Chatelet B, Dufaud V, Hérault D, Martinez A. Azaphosphatranes Catalyzed Strecker Reaction in the Presence of Water. ChemistrySelect 2020. [DOI: 10.1002/slct.202003602] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Jian Yang
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | | | - Chunyang Li
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Xavier Bugaut
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Bastien Chatelet
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Véronique Dufaud
- Laboratoire de Chimie Catalyse Polymères Procédés (C2P2) CNRS Université Claude Bernard Lyon 1, CPE Lyon 43 bd du 11 Novembre 1918 F-69616 France
| | - Damien Hérault
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
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8
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Brar A, Mummadi S, Unruh DK, Krempner C. Verkade Base in FLP Chemistry–From Stoichiometric C–H Bond Cleavage to the Catalytic Dimerization of Alkynes. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00411] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Amandeep Brar
- Texas Tech University, Department of Chemistry and Biochemistry, Box 41061, Lubbock, Texas 79409-1061, United States
| | - Suresh Mummadi
- Texas Tech University, Department of Chemistry and Biochemistry, Box 41061, Lubbock, Texas 79409-1061, United States
| | - Daniel K. Unruh
- Texas Tech University, Department of Chemistry and Biochemistry, Box 41061, Lubbock, Texas 79409-1061, United States
| | - Clemens Krempner
- Texas Tech University, Department of Chemistry and Biochemistry, Box 41061, Lubbock, Texas 79409-1061, United States
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9
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Kögel JF, Ullrich S, Kovačević B, Wagner S, Sundermeyer J. Mono‐Phosphazenyl Phosphines (R
2
N)
3
P=N–P(NR
2
)
2
– Strong P‐Bases, P‐Donors, and P‐Nucleophiles for the Construction of Chelates. Z Anorg Allg Chem 2020. [DOI: 10.1002/zaac.202000108] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Julius F. Kögel
- Fachbereich Chemie Philipps‐Universität Marburg Hans‐Meerwein‐Straße 35032 Marburg Germany
| | - Sebastian Ullrich
- Fachbereich Chemie Philipps‐Universität Marburg Hans‐Meerwein‐Straße 35032 Marburg Germany
| | - Borislav Kovačević
- Group for Computational Life Sciences Rudjer Bošković Institute Bijenička c. 54 10000 Zagreb Croatia
| | - Sebastian Wagner
- Fachbereich Chemie Philipps‐Universität Marburg Hans‐Meerwein‐Straße 35032 Marburg Germany
| | - Jörg Sundermeyer
- Fachbereich Chemie Philipps‐Universität Marburg Hans‐Meerwein‐Straße 35032 Marburg Germany
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10
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Dutasta JP, Martinez A. Encapsulation of Azaphosphatranes and Proazaphosphatranes in Confined Spaces. Chempluschem 2020; 85:977-984. [PMID: 32410370 DOI: 10.1002/cplu.202000204] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 04/30/2020] [Indexed: 01/18/2023]
Abstract
Proazaphosphatranes (also named Verkade's superbases) and their azaphosphatrane conjugated acids have been recently been shown to be confined in either covalent or self-assembled molecular cages, or immobilized in nanopores of hybrid materials. The encapsulation of these phosphorus moieties turns out to strongly affect both their acid-base, catalytic, and recognition properties. The thermodynamics and kinetics of the proton transfer as well as the selectivity and catalytic activities of Verkade's superbases were strongly changed upon their confinement in a hemicryptophane cavity. Moreover, self-assembled cages, including azaphosphatrane moieties, were found to display remarkable anion recognition properties in water. In this Minireview, these new aspects of the chemistry of aza- and proaza-phosphatranes are presented, in order to highlight the great potential of such an approach.
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Affiliation(s)
- Jean-Pierre Dutasta
- Laboratoire de Chimie, École Normale Supérieure de Lyon CNRS, UCLB, 46 allée d'Italie, F-69364, Lyon, France
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11
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Kraka E, Freindorf M. Characterizing the Metal–Ligand Bond Strength via Vibrational Spectroscopy: The Metal–Ligand Electronic Parameter (MLEP). TOP ORGANOMETAL CHEM 2020. [DOI: 10.1007/3418_2020_48] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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12
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Yang J, Chatelet B, Hérault D, Dufaud V, Robert V, Grass S, Lacour J, Vanthuyne N, Jean M, Albalat M, Dutasta J, Martinez A. Enantiopure encaged Verkade's superbases: Synthesis, chiroptical properties, and use as chiral derivatizing agent. Chirality 2019; 32:139-146. [DOI: 10.1002/chir.23156] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 10/14/2019] [Accepted: 11/04/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Jian Yang
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Bastien Chatelet
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Damien Hérault
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Véronique Dufaud
- Laboratoire de Chimie, Catalyse, Polymères, Procédés CNRS, UMR 5265Université Claude Bernard Lyon1 Villeurbanne cedex France
| | - Vincent Robert
- Laboratoire de Chimie Quantique Institut de Chimie, UMR CNRS 7177Université de Strasbourg Strasbourg France
| | - Stéphane Grass
- Department of Organic Chemistry, Quai Ernest Ansermet 30University of Geneva Geneva Switzerland
| | - Jérôme Lacour
- Department of Organic Chemistry, Quai Ernest Ansermet 30University of Geneva Geneva Switzerland
| | | | - Marion Jean
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Muriel Albalat
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Jean‐Pierre Dutasta
- Laboratoire de Chimie École Normale Supérieure de Lyon CNRS, UCBL, 46 Allée d'Italie Lyon F‐69364 France
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13
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Matthews AD, Prasad S, Schley ND, Donald KJ, Johnson MW. On Transannulation in Azaphosphatranes: Synthesis and Theoretical Analysis. Inorg Chem 2019; 58:15983-15992. [PMID: 31713428 DOI: 10.1021/acs.inorgchem.9b02467] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A combined synthetic-theoretical study has been undertaken to determine the factors that influence transannulation in azaphosphatranes. The commonly used proazaphosphatrane P(i-BuNCH2CH2)3N and several of its oxidized congeners are used as model systems. The haloazaphosphatranes of P(i-BuNCH2CH2)3N were synthesized, including a rare fluoroazaphopshatrane, and used as references for computational investigations. Comparisons of the experimental and theoretical observations highlight the flexibility observed in transannulated atranes and the potential for multiple local energetic minima depending on the identity of the equatorial substituents for a given azaphosphatrane. Theoretical calculations also identify the role of the ethylene linker in azaphosphatrane bonding, the influence of transannulation on P-electrophile interactions, and the contribution of electrostatic interactions to transannulation.
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Affiliation(s)
- Adrian D Matthews
- Department of Chemistry , University of Richmond , Richmond , Virginia 23173 , United States
| | - Supreeth Prasad
- Department of Chemistry , University of Richmond , Richmond , Virginia 23173 , United States
| | - Nathan D Schley
- Department of Chemistry , Vanderbilt University , Nashville , Tennessee 37235 , United States
| | - Kelling J Donald
- Department of Chemistry , University of Richmond , Richmond , Virginia 23173 , United States
| | - Miles W Johnson
- Department of Chemistry , University of Richmond , Richmond , Virginia 23173 , United States
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14
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Ullrich S, Kovačević B, Xie X, Sundermeyer J. Phosphazenyl Phosphines: The Most Electron‐Rich Uncharged Phosphorus Brønsted and Lewis Bases. Angew Chem Int Ed Engl 2019; 58:10335-10339. [DOI: 10.1002/anie.201903342] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 04/29/2019] [Indexed: 01/15/2023]
Affiliation(s)
- Sebastian Ullrich
- Fachbereich ChemiePhilipps-Universität Marburg Hans-Meerwein-Straße 35032 Marburg Germany
| | - Borislav Kovačević
- The Group for Computational Life SciencesRudjer Bošković Institute Bijenička c. 54 10000 Zagreb Croatia
| | - Xiulan Xie
- Fachbereich ChemiePhilipps-Universität Marburg Hans-Meerwein-Straße 35032 Marburg Germany
| | - Jörg Sundermeyer
- Fachbereich ChemiePhilipps-Universität Marburg Hans-Meerwein-Straße 35032 Marburg Germany
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15
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Ullrich S, Kovačević B, Xie X, Sundermeyer J. Phosphazenylphosphine: Die elektronenreichsten ungeladenen Brønsted‐ und Lewis‐Phosphor‐Basen. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201903342] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Sebastian Ullrich
- Fachbereich ChemiePhilipps-Universität Marburg Hans-Meerwein-Straße 35032 Marburg Deutschland
| | - Borislav Kovačević
- The Group for Computational Life SciencesRudjer Bošković Institute Bijenička 54 HR-10000 Zagreb Kroatien
| | - Xiulan Xie
- Fachbereich ChemiePhilipps-Universität Marburg Hans-Meerwein-Straße 35032 Marburg Deutschland
| | - Jörg Sundermeyer
- Fachbereich ChemiePhilipps-Universität Marburg Hans-Meerwein-Straße 35032 Marburg Deutschland
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16
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Johnstone TC, Briceno-Strocchia AI, Stephan DW. Frustrated Lewis Pair Oxidation Permits Synthesis of a Fluoroazaphosphatrane, [FP(MeNCH2CH2)3N]+. Inorg Chem 2018; 57:15299-15304. [DOI: 10.1021/acs.inorgchem.8b02605] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Timothy C. Johnstone
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | | | - Douglas W. Stephan
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
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17
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Yang J, Chatelet B, Ziarelli F, Dufaud V, Hérault D, Martinez A. Verkade's Superbase as an Organocatalyst for the Strecker Reaction. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801170] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Jian Yang
- Aix Marseille Univ; CNRS, Centrale Marseille; iSm2; Marseille France
| | - Bastien Chatelet
- Aix Marseille Univ; CNRS, Centrale Marseille; iSm2; Marseille France
| | - Fabio Ziarelli
- Aix-Marseille Université; Centrale Marseille; CNRS; 13397 Marseille France
| | - Véronique Dufaud
- Laboratoire de Chimie, Catalyse, Polymères; Procédés CNRS, UMR 5265; Université Claude Bernard Lyon 1; 43 Bd du 11 novembre 1918 69616 Villeurbanne cedex France
| | - Damien Hérault
- Aix Marseille Univ; CNRS, Centrale Marseille; iSm2; Marseille France
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18
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Matthews AD, Gravalis GM, Schley ND, Johnson MW. Synthesis, Structure, and Reactivity of Palladium Proazaphosphatrane Complexes Invoked in C–N Cross-Coupling. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00453] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Adrian D. Matthews
- Department of Chemistry, University of Richmond, Richmond, Virginia 23173, United States
| | - Gregory M. Gravalis
- Department of Chemistry, University of Richmond, Richmond, Virginia 23173, United States
| | - Nathan D. Schley
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Miles W. Johnson
- Department of Chemistry, University of Richmond, Richmond, Virginia 23173, United States
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19
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Han YL, Zhao BY, Jiang KY, Yan HM, Zhang ZX, Yang WJ, Guo Z, Li YR. Mechanistic Insights into the Ni-Catalyzed Reductive Carboxylation of C-O Bonds in Aromatic Esters with CO 2 : Understanding Remarkable Ligand and Traceless-Directing-Group Effects. Chem Asian J 2018; 13:1570-1581. [PMID: 29774983 DOI: 10.1002/asia.201800257] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 04/01/2018] [Indexed: 12/20/2022]
Abstract
The mechanism of the Ni0 -catalyzed reductive carboxylation reaction of C(sp2 )-O and C(sp3 )-O bonds in aromatic esters with CO2 to access valuable carboxylic acids was comprehensively studied by using DFT calculations. Computational results revealed that this transformation was composed of several key steps: C-O bond cleavage, reductive elimination, and/or CO2 insertion. Of these steps, C-O bond cleavage was found to be rate-determining, and it occurred through either oxidative addition to form a NiII intermediate, or a radical pathway that involved a bimetallic species to generate two NiI species through homolytic dissociation of the C-O bond. DFT calculations revealed that the oxidative addition step was preferred in the reductive carboxylation reactions of C(sp2 )-O and C(sp3 )-O bonds in substrates with extended π systems. In contrast, oxidative addition was highly disfavored when traceless directing groups were involved in the reductive coupling of substrates without extended π systems. In such cases, the presence of traceless directing groups allowed for docking of a second Ni0 catalyst, and the reactions proceed through a bimetallic radical pathway, rather than through concerted oxidative addition, to afford two NiI species both kinetically and thermodynamically. These theoretical mechanistic insights into the reductive carboxylation reactions of C-O bonds were also employed to investigate several experimentally observed phenomena, including ligand-dependent reactivity and site-selectivity.
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Affiliation(s)
- Yan-Li Han
- College of Material Science & Engineering, Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Shanxi, 030024, P. R. China
| | - Bing-Yuan Zhao
- College of Material Science & Engineering, Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Shanxi, 030024, P. R. China
| | - Kun-Yao Jiang
- College of Material Science & Engineering, Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Shanxi, 030024, P. R. China
| | - Hui-Min Yan
- College of Material Science & Engineering, Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Shanxi, 030024, P. R. China
| | - Zhu-Xia Zhang
- College of Material Science & Engineering, Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Shanxi, 030024, P. R. China
| | - Wen-Jing Yang
- College of Material Science & Engineering, Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Shanxi, 030024, P. R. China
| | - Zhen Guo
- College of Material Science & Engineering, Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Shanxi, 030024, P. R. China
| | - Yan-Rong Li
- Department of Earth Sciences and Engineering, Taiyuan University of Technology, Shanxi, 030024, P. R. China
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20
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Ardizzoia GA, Brenna S. Interpretation of Tolman electronic parameters in the light of natural orbitals for chemical valence. Phys Chem Chem Phys 2018; 19:5971-5978. [PMID: 28180221 DOI: 10.1039/c6cp07793e] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Understanding the nature and the strength of metal-ligand interactions in d- and f-block metal complexes has always been a central issue for both synthetic and theoretical chemists. These interactions are usually described according to the well accepted Dewar-Chatt-Duncanson model, and thus over the years numerous research groups directed their efforts to shed light on the role of σ- and π-contributions. Among others, the electronic parameter introduced by Tolman in the 1970s represents a milestone in this field. Herein we present a quantitative description of the nickel-phosphine bond in Tolman's nickel(0) carbonyl complexes. The combination of Natural Orbitals for Chemical Valence with Energy Decomposition Analysis resulted in the definition of a new parameter (Tphos) which comprises all the energetic contributions needed to describe the nickel-phosphine bond and thus stands as a reliable descriptor of the electronic properties of phosphines. Moreover, steric effects of phosphines (i.e. Tolman's cone angles) have been considered too, and a linear relation including Ni-P bond distances, Tphos and cone angle has been found.
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Affiliation(s)
- G Attilio Ardizzoia
- Dipartimento di Scienza e Alta Tecnologia, Università degli Studi dell'Insubria, Via Valleggio, 9, 22100 Como, Italy.
| | - Stefano Brenna
- Dipartimento di Scienza e Alta Tecnologia, Università degli Studi dell'Insubria, Via Valleggio, 9, 22100 Como, Italy.
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21
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Thammavongsy Z, Cunningham DW, Sutthirat N, Eisenhart RJ, Ziller JW, Yang JY. Adaptable ligand donor strength: tracking transannular bond interactions in tris(2-pyridylmethyl)-azaphosphatrane (TPAP). Dalton Trans 2018; 47:14101-14110. [PMID: 30252015 DOI: 10.1039/c8dt03180k] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Flexible ligands that can adapt their donor strength have enabled unique reactivity in a wide range of inorganic complexes.
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Affiliation(s)
| | | | | | | | | | - Jenny Y. Yang
- Department of Chemistry
- University of California
- Irvine
- USA
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22
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Chatelet B, Nava P, Clavier H, Martinez A. Synthesis of Gold(I) Complexes Bearing Verkade's Superbases. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700897] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Paola Nava
- CNRS Centrale Marseille Aix Marseille Univ. Marseille France
| | - Herve Clavier
- CNRS Centrale Marseille Aix Marseille Univ. Marseille France
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23
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Mummadi S, Kenefake D, Diaz R, Unruh DK, Krempner C. Interactions of Verkade’s Superbase with Strong Lewis Acids: From Labile Mono- and Binuclear Lewis Acid–Base Complexes to Phosphenium Cations. Inorg Chem 2017; 56:10748-10759. [DOI: 10.1021/acs.inorgchem.7b01719] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Suresh Mummadi
- Department of Chemistry and Biochemistry, Texas Tech University, Box 1061, Lubbock, Texas 79409-1061, United States
| | - Dustin Kenefake
- Department of Chemistry and Biochemistry, Texas Tech University, Box 1061, Lubbock, Texas 79409-1061, United States
| | - Rony Diaz
- Department of Chemistry and Biochemistry, Texas Tech University, Box 1061, Lubbock, Texas 79409-1061, United States
| | - Daniel K. Unruh
- Department of Chemistry and Biochemistry, Texas Tech University, Box 1061, Lubbock, Texas 79409-1061, United States
| | - Clemens Krempner
- Department of Chemistry and Biochemistry, Texas Tech University, Box 1061, Lubbock, Texas 79409-1061, United States
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24
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Cremer D, Kraka E. Generalization of the Tolman electronic parameter: the metal–ligand electronic parameter and the intrinsic strength of the metal–ligand bond. Dalton Trans 2017; 46:8323-8338. [DOI: 10.1039/c7dt00178a] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The MLEP is a new, generally applicable measure of the metal–ligand bond strength based on vibrational spectroscopy, replacing the TEP.
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Affiliation(s)
- Dieter Cremer
- Computational and Theoretical Chemistry Group (CATCO)
- Department of Chemistry
- Southern Methodist University
- Dallas
- USA
| | - Elfi Kraka
- Computational and Theoretical Chemistry Group (CATCO)
- Department of Chemistry
- Southern Methodist University
- Dallas
- USA
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25
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Mehlmann P, Mück-Lichtenfeld C, Tan TTY, Dielmann F. Tris(imidazolin-2-ylidenamino)phosphine: A Crystalline Phosphorus(III) Superbase That Splits Carbon Dioxide. Chemistry 2016; 23:5929-5933. [DOI: 10.1002/chem.201604971] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Paul Mehlmann
- Institut für Anorganische und Analytische Chemie; Westfälische Wilhelms-Universität Münster; Corrensstrasse 30 48149 Münster Germany
| | - Christian Mück-Lichtenfeld
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstrasse 40 48149 Münster Germany
| | - Tristan T. Y. Tan
- Institut für Anorganische und Analytische Chemie; Westfälische Wilhelms-Universität Münster; Corrensstrasse 30 48149 Münster Germany
| | - Fabian Dielmann
- Institut für Anorganische und Analytische Chemie; Westfälische Wilhelms-Universität Münster; Corrensstrasse 30 48149 Münster Germany
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