1
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Crumpton AE, Heilmann A, Aldridge S. Modulating Hydrogen Shuttling in Ammonia by Neutral and Cationic Boron-Containing Frustrated Lewis Pairs (FLPs). Angew Chem Int Ed Engl 2024; 63:e202406440. [PMID: 38818696 DOI: 10.1002/anie.202406440] [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: 04/04/2024] [Revised: 05/27/2024] [Accepted: 05/28/2024] [Indexed: 06/01/2024]
Abstract
Xanthene-backbone FLPs featuring secondary borane functions -B(ArX)H (where ArX=C6F5 (ArF) or C6Cl5 (ArCl)) have been targeted through reactions of the dihydroboranes Me2S ⋅ BArXH2 with [4,5-xanth(PR2)Li]2 (R=Ph, iPr), and investigated in the synthesis of related cationic systems via hydride abstraction. The reactivity of these systems (both cationic and charge neutral) with ammonia have been probed, with a view to probing the potential for proton shuttling via N-H bond 'activation.' We find that in the case of four-coordinate boron systems (cationic or change neutral), the N-H linkage remains intact, supported by a NH⋅⋅⋅P hydrogen bond which is worth up to 17 kcal mol-1 thermodynamically, and enabled by planarization of the flexible xanthene scaffold. For cationic three coordinate systems, N-to-P proton transfer is viable, driven by the ability of the boron centre to stabilise the [NH2]- conjugate base through N-to-B π bonding. This proton transfer can be shown to be reversible in the presence of excess ammonia, depending on the nature of the B-bound ArX group. It is viable in the case of C6F5 substituents, but is prevented by the more sterically encumbering and secondary donor-stabilising capabilities of the C6Cl5 substituent.
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Affiliation(s)
- Agamemnon E Crumpton
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK
| | - Andreas Heilmann
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK
| | - Simon Aldridge
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK
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2
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Gulyaeva ES, Osipova ES, Kovalenko SA, Filippov OA, Belkova NV, Vendier L, Canac Y, Shubina ES, Valyaev DA. Two active species from a single metal halide precursor: a case study of highly productive Mn-catalyzed dehydrogenation of amine-boranes via intermolecular bimetallic cooperation. Chem Sci 2024; 15:1409-1417. [PMID: 38274083 PMCID: PMC10806649 DOI: 10.1039/d3sc05356c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 12/06/2023] [Indexed: 01/27/2024] Open
Abstract
Metal-metal cooperation for inert bond activation is a ubiquitous concept in coordination chemistry and catalysis. While the great majority of such transformations proceed via intramolecular mode in binuclear complexes, to date only a few examples of intermolecular small molecule activation using usually bimetallic frustrated Lewis pairs (Mδ+⋯M'δ-) have been reported. We introduce herein an alternative approach for the intermolecular bimetallic cooperativity observed in the catalytic dehydrogenation of amine-boranes, in which the concomitant activation of N-H and B-H bonds of the substrate via the synergetic action of Lewis acidic (M+) and basic hydride (M-H) metal species derived from the same mononuclear complex (M-Br). It was also demonstrated that this system generated in situ from the air-stable Mn(i) complex fac-[(CO)3(bis(NHC))MnBr] and NaBPh4 shows high activity for H2 production from several substrates (Me2NHBH3, tBuNH2BH3, MeNH2BH3, NH3BH3) at low catalyst loading (0.1% to 50 ppm), providing outstanding efficiency for Me2NHBH3 (TON up to 18 200) that is largely superior to all known 3d-, s-, p-, f-block metal derivatives and frustrated Lewis pairs (FLPs). These results represent a step forward towards more extensive use of intermolecular bimetallic cooperation concepts in modern homogeneous catalysis.
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Affiliation(s)
- Ekaterina S Gulyaeva
- LCC-CNRS, Université de Toulouse, CNRS, UPS 205 Route de Narbonne 31077 Toulouse Cedex 4 France
- A. N. Nesmeyanov Institute of Organoelement Compounds (INEOS), Russian Academy of Sciences 28/1 Vavilov Str., GSP-1, B-334 Moscow 119334 Russia
| | - Elena S Osipova
- A. N. Nesmeyanov Institute of Organoelement Compounds (INEOS), Russian Academy of Sciences 28/1 Vavilov Str., GSP-1, B-334 Moscow 119334 Russia
| | - Sergey A Kovalenko
- A. N. Nesmeyanov Institute of Organoelement Compounds (INEOS), Russian Academy of Sciences 28/1 Vavilov Str., GSP-1, B-334 Moscow 119334 Russia
| | - Oleg A Filippov
- A. N. Nesmeyanov Institute of Organoelement Compounds (INEOS), Russian Academy of Sciences 28/1 Vavilov Str., GSP-1, B-334 Moscow 119334 Russia
| | - Natalia V Belkova
- A. N. Nesmeyanov Institute of Organoelement Compounds (INEOS), Russian Academy of Sciences 28/1 Vavilov Str., GSP-1, B-334 Moscow 119334 Russia
| | - Laure Vendier
- LCC-CNRS, Université de Toulouse, CNRS, UPS 205 Route de Narbonne 31077 Toulouse Cedex 4 France
| | - Yves Canac
- LCC-CNRS, Université de Toulouse, CNRS, UPS 205 Route de Narbonne 31077 Toulouse Cedex 4 France
| | - Elena S Shubina
- A. N. Nesmeyanov Institute of Organoelement Compounds (INEOS), Russian Academy of Sciences 28/1 Vavilov Str., GSP-1, B-334 Moscow 119334 Russia
| | - Dmitry A Valyaev
- LCC-CNRS, Université de Toulouse, CNRS, UPS 205 Route de Narbonne 31077 Toulouse Cedex 4 France
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3
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Himmelbauer D, Müller F, Schweinzer C, Casas F, Pribanic B, Le Corre G, Thöny D, Trincado M, Grützmacher H. Selective dehydrogenation of ammonia borane to polycondensated BN rings catalysed by ruthenium olefin complexes. Chem Commun (Camb) 2024; 60:885-888. [PMID: 38165285 PMCID: PMC10795514 DOI: 10.1039/d3cc05709g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 12/14/2023] [Indexed: 01/03/2024]
Abstract
Dehydrogenation of ammonia borane to well-defined products is an important but challenging reaction. A dinuclear ruthenium complex with a Ru-Ru bond bearing a diazadiene (dad) unit and olefins as non-innocent ligands catalyzes the highly selective formation of conjugated polycondensed borazine oligomers (BxNxHy), predominantly B21N21H18, the BN analogue of superbenzene.
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Affiliation(s)
- Daniel Himmelbauer
- Department of Chemistry and Applied Biosciences, ETH Zurich Vladimir-Prelog-Weg 1Zurich CH-8049Switzerlandtrincado@inorg,chem.ethz.ch
- Institute of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163Vienna A-1060Austria
| | - Fabian Müller
- Department of Chemistry and Applied Biosciences, ETH Zurich Vladimir-Prelog-Weg 1Zurich CH-8049Switzerlandtrincado@inorg,chem.ethz.ch
| | - Clara Schweinzer
- Department of Chemistry and Applied Biosciences, ETH Zurich Vladimir-Prelog-Weg 1Zurich CH-8049Switzerlandtrincado@inorg,chem.ethz.ch
| | - Fernando Casas
- Department of Chemistry and Applied Biosciences, ETH Zurich Vladimir-Prelog-Weg 1Zurich CH-8049Switzerlandtrincado@inorg,chem.ethz.ch
| | - Bruno Pribanic
- Department of Chemistry and Applied Biosciences, ETH Zurich Vladimir-Prelog-Weg 1Zurich CH-8049Switzerlandtrincado@inorg,chem.ethz.ch
| | - Grégoire Le Corre
- Department of Chemistry and Applied Biosciences, ETH Zurich Vladimir-Prelog-Weg 1Zurich CH-8049Switzerlandtrincado@inorg,chem.ethz.ch
| | - Debora Thöny
- Department of Chemistry and Applied Biosciences, ETH Zurich Vladimir-Prelog-Weg 1Zurich CH-8049Switzerlandtrincado@inorg,chem.ethz.ch
| | - Monica Trincado
- Department of Chemistry and Applied Biosciences, ETH Zurich Vladimir-Prelog-Weg 1Zurich CH-8049Switzerlandtrincado@inorg,chem.ethz.ch
| | - Hansjörg Grützmacher
- Department of Chemistry and Applied Biosciences, ETH Zurich Vladimir-Prelog-Weg 1Zurich CH-8049Switzerlandtrincado@inorg,chem.ethz.ch
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4
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Frenette BL, Rivard E. Frustrated Lewis Pair Chelation in the p-Block. Chemistry 2023; 29:e202302332. [PMID: 37677126 DOI: 10.1002/chem.202302332] [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: 07/20/2023] [Revised: 09/06/2023] [Accepted: 09/07/2023] [Indexed: 09/09/2023]
Abstract
Frustrated Lewis pairs (FLPs) have been the subject of considerable study since the field's inception. While much of the research into FLPs has centered around small molecule activation for diverse stoichiometric and catalytic transformations, intramolecular FLPs also show promise as chelating ligands. The cooperative action of Lewis basic and acidic moieties enables intramolecular FLPs to stabilize low oxidation state centers and (consequently) reactive molecular fragments through a donor-acceptor approach, making them an attractive ligand class in main group element chemistry. This review outlines the state of FLP chelation to date throughout the p-block, encompassing primarily groups 13-16.
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Affiliation(s)
- Brandon L Frenette
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr., Edmonton, Alberta, T6G 2G2, Canada
| | - Eric Rivard
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr., Edmonton, Alberta, T6G 2G2, Canada
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5
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Ki Au Y, Ma Q, Zhang J, Xie Z. Ir-Catalyzed B(3)-Amination of o-Carboranes with Amines via Acceptorless Dehydrogenative BH/NH Cross-Coupling. Chem Asian J 2023; 18:e202300611. [PMID: 37694997 DOI: 10.1002/asia.202300611] [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: 07/14/2023] [Revised: 09/09/2023] [Accepted: 09/11/2023] [Indexed: 09/12/2023]
Abstract
An efficient and convenient strategy for Ir-catalyzed selective B(3)-amination of o-carboranes with amines via acceptorless BH/NH dehydrocoupling was developed, affording a series of B(3)-aminated-o-carboranes in moderate to high isolated yields with H2 gas as a sole by-product. Such an oxidant-free system endues the protocol sustainability, atom-economy and environmental friendliness. A reaction mechanism via an Ir(I)-Ir(III)-Ir(I) catalytic cycle involving oxidative addition, dehydrogenation and reductive elimination was proposed.
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Affiliation(s)
- Yik Ki Au
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong Shatin, N.T., Hong Kong, P.R. China
| | - Qiangqiang Ma
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong Shatin, N.T., Hong Kong, P.R. China
| | - Jie Zhang
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong Shatin, N.T., Hong Kong, P.R. China
| | - Zuowei Xie
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong Shatin, N.T., Hong Kong, P.R. China
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, P.R.China
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6
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Oldroyd NL, Chitnis SS, LaPierre EA, Annibale VT, Walsgrove HTG, Gates DP, Manners I. Ambient Temperature Carbene-Mediated Depolymerization: Stoichiometric and Catalytic Reactions of N-Heterocyclic- and Cyclic(Alkyl)Amino Carbenes with Poly( N-Methylaminoborane) [MeNH–BH 2] n. J Am Chem Soc 2022; 144:23179-23190. [DOI: 10.1021/jacs.2c10931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Nicola L. Oldroyd
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
- Department of Chemistry, University of Victoria, Victoria BC V8W 3V6, Canada
| | - Saurabh S. Chitnis
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
| | - Etienne A. LaPierre
- Department of Chemistry, University of Victoria, Victoria BC V8W 3V6, Canada
| | - Vincent T. Annibale
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
- Department of Chemistry, University of Victoria, Victoria BC V8W 3V6, Canada
| | - Henry T. G. Walsgrove
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver V6T 1Z1, British Columbia, Canada
| | - Derek P. Gates
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver V6T 1Z1, British Columbia, Canada
| | - Ian Manners
- Department of Chemistry, University of Victoria, Victoria BC V8W 3V6, Canada
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7
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Federmann P, Bosse T, Wolff S, Cula B, Herwig C, Limberg C. A strained intramolecular P/Al-FLP and its reactivity toward allene. Chem Commun (Camb) 2022; 58:13451-13454. [PMID: 36342335 DOI: 10.1039/d2cc05640b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
FLPs featuring aluminum-phosphane interactions, spring-loaded by a rigid biphenylene linker, have been accessed through a route where trimethyltin units at phosphane-functionalized organic backbones are exchanged by an AlCl2 moiety. Upon contact with substrates like CO2 these are readily bound by the Al/P site with release of strain. The system could also be utilized for a unique reactivity, namely the activation of allene.
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Affiliation(s)
- Patrick Federmann
- Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489, Berlin, Germany.
| | - Tamino Bosse
- Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489, Berlin, Germany.
| | - Siad Wolff
- Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489, Berlin, Germany.
| | - Beatrice Cula
- Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489, Berlin, Germany.
| | - Christian Herwig
- Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489, Berlin, Germany.
| | - Christian Limberg
- Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489, Berlin, Germany.
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8
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Omaña AA, Watt R, Zhou Y, Ferguson MJ, Rivard E. Frustrated Lewis Pair Chelation and Reactivity of Complexed Parent Iminoborane and Aminoborane. Inorg Chem 2022; 61:16430-16440. [PMID: 36197137 DOI: 10.1021/acs.inorgchem.2c02535] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An intramolecular phosphine-borane frustrated Lewis pair (FLP) chelate, iPr2P(C6H4)BCy2 or PB (Cy = cyclohexyl), was used to coordinate aminoborane (H2BNH2) and iminoborane (HBNH) units via donor-acceptor stabilization. Attempts to induce dehydrogenation from these B-N adducts with known metal catalysts (or pre-catalysts) have been unsuccessful thus far, and related observations were noted with an H2BNH2 complex supported by a modified FLP chelate bearing a geometrically constrained bicyclic 9-borabicyclo(3.3.1)nonane (BBN) unit. Treatment of the iminoborane adduct [PB{HBNH}] with a chlorinating agent led to ligand activation via B-C bond cleavage instead of the expected H/Cl exchange at boron to give [PB{ClBNH}]. Nucleophilic attack at the boron center in [PB{HBNH}] was observed upon addition of BnK (Bn = benzyl), yielding the amidoborate complex [PB{H(Bn)BNH}{K(THF)2}].
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Affiliation(s)
- Alvaro A Omaña
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr., Edmonton, Alberta T6G 2G2, Canada
| | - Ryan Watt
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr., Edmonton, Alberta T6G 2G2, Canada
| | - Yuqiao Zhou
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr., Edmonton, Alberta T6G 2G2, Canada
| | - Michael J Ferguson
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr., Edmonton, Alberta T6G 2G2, Canada
| | - Eric Rivard
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr., Edmonton, Alberta T6G 2G2, Canada
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9
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Sultana M, Bhattacharjee I, Bhunya S, Paul A. Uncovering the Synchronous Role of Bis‐borane with Nucleophilic Solvent as Frustrated Lewis pair in Metal‐free Catalytic Dehydrogenation of Ammonia‐borane. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Munia Sultana
- Indian Association for the Cultivation of Science School of Chemical Sciences INDIA
| | - Ishita Bhattacharjee
- Indian Association for the Cultivation of Science School of Chemical Sciences INDIA
| | - Sourav Bhunya
- Indian Association for the Cultivation of Science School of Chemical Sciences INDIA
| | - Ankan Paul
- Indian Association for the Cultivation of Science Raman Centre for Atomic, Molecular and Optical Sciences 2A and 2B, Raja S. C. Mullick RoadJadavpur 700032 Kolkata INDIA
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10
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Zulkifly I, Protchenko A, Fuentes MÁ, Hicks J, Aldridge S. Reactions of a Dimethylxanthene‐Derived Frustrated Lewis Pair with Silanes and Stannanes. Z Anorg Allg Chem 2022. [DOI: 10.1002/zaac.202200110] [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)
| | | | | | | | - Simon Aldridge
- University of Oxford Chemistry Inorganic Chemistry LaboratorySouth Parks Road SN77RR Oxford UNITED KINGDOM
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11
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Škoch K, Daniliuc CG, Müller M, Grimme S, Kehr G, Erker G. Stereochemical Behavior of Pairs of P‐stereogenic Phosphanyl Groups at the Dimethylxanthene Backbone. Chemistry 2022; 28:e202200248. [DOI: 10.1002/chem.202200248] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Karel Škoch
- Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
- Current address: Institute of Inorganic Chemistry of the Czech Academy of Sciences Husinec 250 68 Husinec-Řež (Czech Republic
| | | | - Marcel Müller
- Mulliken Center for Theoretical Chemistry Institut für Physikalische und Theoretische Chemie Universität Bonn Beringstraβe 4 53115 Bonn Germany
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry Institut für Physikalische und Theoretische Chemie Universität Bonn Beringstraβe 4 53115 Bonn Germany
| | - Gerald Kehr
- Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Gerhard Erker
- Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
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12
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Harders P, Griebenow T, Businski A, Kaus AJ, Pietsch L, Näther C, McConnell A. The Dynamic Covalent Chemistry of Amidoboronates: Tuning the rac5/rac6 Ratio via the B‑N and B‐O Dynamic Covalent Bonds. Chempluschem 2022; 87:e202200022. [DOI: 10.1002/cplu.202200022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/07/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Patrick Harders
- Christian-Albrechts-Universitat zu Kiel Otto Diels Institute of Organic Chemistry GERMANY
| | - Thomas Griebenow
- Christian Albrechts Universität zu Kiel: Christian-Albrechts-Universitat zu Kiel Otto Diels Institute of Organic Chemistry GERMANY
| | - Artjom Businski
- Christian-Albrechts-Universitat zu Kiel Otto Diels Institute of Organic Chemistry GERMANY
| | - Anton J. Kaus
- Christian-Albrechts-Universitat zu Kiel Otto Diels Institute of Organic Chemistry GERMANY
| | - Lorenz Pietsch
- Christian-Albrechts-Universitat zu Kiel Otto Diels Institute of Organic Chemistry GERMANY
| | - Christian Näther
- Christian-Albrechts-Universitat zu Kiel Institute of Inorganic Chemistry GERMANY
| | - Anna McConnell
- Kiel University Institute of Organic Chemistry Otto-Hahn-Platz 4 24098 Kiel GERMANY
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13
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Bhattacharjee I, Sultana M, Bhunya S, Paul A. The curious saga of dehydrogenation/hydrogenation for chemical hydrogen storage: a mechanistic perspective. Chem Commun (Camb) 2022; 58:1672-1684. [PMID: 35024699 DOI: 10.1039/d1cc06238g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydrogen storage is an indispensable component of hydrogen-based fuel economy. Chemical hydrogen storage relies on the development of lightweight compounds which can deliver high weight percentage of H2 at moderate temperatures through dehydrogenation and can be recovered from the dehydrogenated mass by hydrogenation for reuse. In this feature article we primarily discuss the mechanistic underpinnings of the catalytic dehydrogenation of ammonia-borane, a potential candidate for hydrogen storage and the challenges associated with its regeneration from the dehydrogenated mass. Moreover, we highlight the mechanistic intricacies, viability, sustainability and unresolved issues of allied chemical hydrogen storage avenues such as the CH3OH-CO2 cycle.
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Affiliation(s)
| | - Munia Sultana
- Indian Association for the Cultivation of Science, Kolkata, India.
| | - Sourav Bhunya
- Indian Association for the Cultivation of Science, Kolkata, India.
| | - Ankan Paul
- Indian Association for the Cultivation of Science, Kolkata, India.
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14
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Delarmelina M, Carneiro JWDM, Catlow CRA, Bühl M. Design of CO2 hydrogenation catalysts based on phosphane/borane frustrated Lewis pairs and xanthene-derived scaffolds. CATAL COMMUN 2022. [DOI: 10.1016/j.catcom.2021.106385] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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15
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Ríos P, Rodríguez A, Conejero S. Activation of Si–H and B–H bonds by Lewis acidic transition metals and p-block elements: same, but different. Chem Sci 2022; 13:7392-7418. [PMID: 35872827 PMCID: PMC9241980 DOI: 10.1039/d2sc02324e] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 05/18/2022] [Indexed: 01/01/2023] Open
Abstract
In this Perspective we discuss the ability of transition metal complexes to activate and cleave the Si–H and B–H bonds of hydrosilanes and hydroboranes (tri- and tetra-coordinated) in an electrophilic manner, avoiding the need for the metal centre to undergo two-electron processes (oxidative addition/reductive elimination). A formal polarization of E–H bonds (E = Si, B) upon their coordination to the metal centre to form σ-EH complexes (with coordination modes η1 or η2) favors this type of bond activation that can lead to reactivities involving the formation of transient silylium and borenium/boronium cations similar to those proposed in silylation and borylation processes catalysed by boron and aluminium Lewis acids. We compare the reactivity of transition metal complexes and boron/aluminium Lewis acids through a series of catalytic reactions in which pieces of evidence suggest mechanisms involving electrophilic reaction pathways. In this Perspective we compare the ability of transition metals and p-block Lewis acids to activate electrophilically hydrosilanes and hydroboranes. The mechanistic similarities and dissimilarities in different catalytic transformations are analyzed.![]()
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Affiliation(s)
- Pablo Ríos
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica CSIC and Universidad de Sevilla, Centro de Innovación en Química Avanzada (ORFEO-CINQA), C/Américo Vespucio 49, 41092, Sevilla, Spain
| | - Amor Rodríguez
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica CSIC and Universidad de Sevilla, Centro de Innovación en Química Avanzada (ORFEO-CINQA), C/Américo Vespucio 49, 41092, Sevilla, Spain
| | - Salvador Conejero
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica CSIC and Universidad de Sevilla, Centro de Innovación en Química Avanzada (ORFEO-CINQA), C/Américo Vespucio 49, 41092, Sevilla, Spain
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16
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Stephan DW. Diverse Uses of the Reaction of Frustrated Lewis Pair (FLP) with Hydrogen. J Am Chem Soc 2021; 143:20002-20014. [PMID: 34786935 DOI: 10.1021/jacs.1c10845] [Citation(s) in RCA: 91] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The articulation of the notion of "frustrated Lewis pairs" (FLPs) emerged from the discovery that H2 can be reversibly activated by combinations of sterically encumbered main group Lewis acids and bases. This has prompted numerous studies focused on various perturbations of the Lewis acid/base combinations and the applications to organic reductions. This Perspective focuses on the new directions and developments that are emerging from this FLP chemistry involving hydrogen. Three areas are discussed including new applications and approaches to FLP reductions, the reductions of small molecules, and the advances in heterogeneous FLP systems. These foci serve to illustrate that despite having its roots in main group chemistry, this simple concept of FLPs is being applied across the discipline.
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Affiliation(s)
- 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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Bogdanova EV, Stogniy MY, Suponitsky KY, Sivaev IB, Bregadze VI. Synthesis of Boronated Amidines by Addition of Amines to Nitrilium Derivative of Cobalt Bis(Dicarbollide). Molecules 2021; 26:6544. [PMID: 34770953 PMCID: PMC8588172 DOI: 10.3390/molecules26216544] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 10/26/2021] [Accepted: 10/28/2021] [Indexed: 11/16/2022] Open
Abstract
A series of novel cobalt bis(dicarbollide) based amidines were synthesized by the nucleophilic addition of primary and secondary amines to highly activated B-N+≡C-R triple bond of the propionitrilium derivative [8-EtC≡N-3,3'-Co(1,2-C2B9H10)(1',2'-C2B9H11)]. The reactions with primary amines result in the formation of mixtures of E and Z isomers of amidines, whereas the reactions with secondary amines lead selectively to the E-isomers. The crystal molecular structures of E-[8-EtC(NMe2)=HN-3,3'-Co(1,2-C2B9H10)(1',2'-C2B9H11)], E-[8-EtC(NEt2)=HN-3,3'-Co(1,2- C2B9H10)(1',2'-C2B9H11)] and E-[8-EtC(NC5H10)=HN-3,3'-Co(1,2-C2B9H10)(1',2'-C2B9H11)] were determined by single crystal X-ray diffraction.
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Affiliation(s)
- Ekaterina V. Bogdanova
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Street, 119991 Moscow, Russia; (E.V.B.); (K.Y.S.); (I.B.S.); (V.I.B.)
- M.V. Lomonosov Institute of Fine Chemical Technology, MIREA—Russian Technological University, 86 Vernadsky Av., 119571 Moscow, Russia
| | - Marina Yu. Stogniy
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Street, 119991 Moscow, Russia; (E.V.B.); (K.Y.S.); (I.B.S.); (V.I.B.)
- M.V. Lomonosov Institute of Fine Chemical Technology, MIREA—Russian Technological University, 86 Vernadsky Av., 119571 Moscow, Russia
| | - Kyrill Yu. Suponitsky
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Street, 119991 Moscow, Russia; (E.V.B.); (K.Y.S.); (I.B.S.); (V.I.B.)
- Basic Department of Chemistry of Innovative Materials and Technologies, G.V. Plekhanov Russian University of Economics, 36 Stremyannyi Line, 117997 Moscow, Russia
| | - Igor B. Sivaev
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Street, 119991 Moscow, Russia; (E.V.B.); (K.Y.S.); (I.B.S.); (V.I.B.)
| | - Vladimir I. Bregadze
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Street, 119991 Moscow, Russia; (E.V.B.); (K.Y.S.); (I.B.S.); (V.I.B.)
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18
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Frenette BL, Omaña AA, Ferguson MJ, Zhou Y, Rivard E. Access to adducts of parent iminoborane isomers, HBNH and NBH 2, using frustrated Lewis pair chelation. Chem Commun (Camb) 2021; 57:10895-10898. [PMID: 34580682 DOI: 10.1039/d1cc04923b] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Adducts of the parent iminoborane isomers, HBNH and NBH2, have been prepared, each stabilized by the frustrated Lewis pair (FLP) chelate iPr2P(C6H4)BCy2 (PB). PB{HBNH} was accessed via dehydrohalogenation, while the corresponding isomer PB{NBH2} was obtained from the borylation of the formal nitrene-FLP complex PB{NH}.
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Affiliation(s)
- Brandon L Frenette
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr, Edmonton, Alberta, T6G 2G2, Canada.
| | - Alvaro A Omaña
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr, Edmonton, Alberta, T6G 2G2, Canada.
| | - Michael J Ferguson
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr, Edmonton, Alberta, T6G 2G2, Canada.
| | - Yuqiao Zhou
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr, Edmonton, Alberta, T6G 2G2, Canada.
| | - Eric Rivard
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr, Edmonton, Alberta, T6G 2G2, Canada.
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19
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Yang D, Bao P, Yang Z, Chen Z, Sakaki S, Maeda S, Zeng G. Pincer‐Type Phosphorus Compounds With Boryl‐Pendant And Application In Catalytic H
2
Generation From Ammonia‐Borane: A Theoretical Study. ChemCatChem 2021. [DOI: 10.1002/cctc.202100661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Deshuai Yang
- Kuang Yaming Honors School and Institute for Brain Sciences Nanjing University Nanjing 210023 P. R. China
- Institute of Theoretical and Computational Chemistry School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 P. R. China
| | - Panqing Bao
- Institute of Theoretical and Computational Chemistry School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 P. R. China
| | - Zhen Yang
- Institute of Advanced Materials (IAM) State-Province Joint Engineering Laboratory of Zeolite Membrane Materials College of Chemistry and Chemical Engineering Jiangxi Normal University Nanchang 330022 P. R. China
| | - Zhaoxu Chen
- Institute of Theoretical and Computational Chemistry School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 P. R. China
| | - Shigeyoshi Sakaki
- Element Strategy Initiative for Catalysts and Batteries Kyoto University Kyoto 615-8245 Japan
| | - Satoshi Maeda
- Department of Chemistry and Institute for Chemical Reaction Design and Discovery Hokkaido University Sapporo 060-0810 Japan
| | - Guixiang Zeng
- Kuang Yaming Honors School and Institute for Brain Sciences Nanjing University Nanjing 210023 P. R. China
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20
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Hartmann D, Braner S, Greb L. Bis(perchlorocatecholato)silane and heteroleptic bidonors: hidden frustrated Lewis pairs resulting from ring strain. Chem Commun (Camb) 2021; 57:8572-8575. [PMID: 34373874 DOI: 10.1039/d1cc03452a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Bis(perchlorocatecholato)silane and bidentate N,N- or N,P-heteroleptic donors were reacted to form hexacoordinated complexes. Depending on the ring strain and hemilability in the adducts, frustrated Lewis pair (FLP) reactivity with aldehydes and catalytic ammonia borane dehydrocoupling was enabled. All reactions were analyzed using density functional theory. This approach represents an alternative way, beyond relying on steric bulk, to achieve frustration in bimolecular FLPs.
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Affiliation(s)
- Deborah Hartmann
- Anorganisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 275, Heidelberg 69120, Germany.
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21
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Sadek O, Bouhadir G, Bourissou D. Lewis pairing and frustration of group 13/15 elements geometrically enforced by (ace)naphthalene, biphenylene and (thio)xanthene backbones. Chem Soc Rev 2021; 50:5777-5805. [PMID: 33972963 DOI: 10.1039/d0cs01259a] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The synthesis, structure, and reactivity of mixed group 13/group 15 compounds (E13 = B, Al, Ga, In, Tl; E15 = N, P, Sb, Bi) featuring a rigid (ace)naphthalene or (thio)xanthene backbone are discussed in this review. The backbone may either enforce or prevent E15→E13 interactions, resulting in Lewis pairing or frustration. The formation of strong E15→E13 interactions is possible upon peri-substitution of (ace)naphthalenes. This gives the opportunity to access and study highly reactive species, as exemplified by P-stabilised borenium salts and boryl radicals. In turn, rigid expanded spacers such as biphenylenes, (thio)xanthenes and dibenzofurans impose long distances and geometrically prevent E15→E13 interactions. Such P-B derivatives display ambiphilic coordination properties and frustrated Lewis pair behaviour towards small molecules, their preorganised structure favouring reversible interaction/activation. Throughout the review, the importance of the scaffold in enforcing or preventing E15→E13 interactions is highlighted and discussed based on experimental data and theoretical calculations.
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Affiliation(s)
- Omar Sadek
- CNRS/Université Paul Sabatier, Laboratoire Hetérochimie Fondamentale et Appliquée (LHFA, UMR 5069), 118 Route de Narbonne, 31062 Cedex 09 Toulouse, France.
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22
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Li T, Zhang W, Qin H, Lu L, Yan S, Zou Z. Inorganic Frustrated Lewis Pairs in Photocatalytic CO
2
Reduction. CHEMPHOTOCHEM 2021. [DOI: 10.1002/cptc.202000312] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Taozhu Li
- Jiangsu Key Laboratory of Artificial Functional Materials Eco-materials and Renewable Energy Research Center (ERERC) Collaborative Innovation Center of Advanced Microstructures College of Engineering and Applied Sciences Nanjing University Nanjing Jiangsu 210093 P.R. China
| | - Weining Zhang
- Jiangsu Key Laboratory for Nano Technology National Laboratory of Solid State Microstructures Department of Physics Nanjing University Nanjing Jiangsu 210093 P.R. China
| | - Hao Qin
- Jiangsu Key Laboratory of Artificial Functional Materials Eco-materials and Renewable Energy Research Center (ERERC) Collaborative Innovation Center of Advanced Microstructures College of Engineering and Applied Sciences Nanjing University Nanjing Jiangsu 210093 P.R. China
| | - Lei Lu
- Jiangsu Key Laboratory of Artificial Functional Materials Eco-materials and Renewable Energy Research Center (ERERC) Collaborative Innovation Center of Advanced Microstructures College of Engineering and Applied Sciences Nanjing University Nanjing Jiangsu 210093 P.R. China
| | - Shicheng Yan
- Jiangsu Key Laboratory of Artificial Functional Materials Eco-materials and Renewable Energy Research Center (ERERC) Collaborative Innovation Center of Advanced Microstructures College of Engineering and Applied Sciences Nanjing University Nanjing Jiangsu 210093 P.R. China
| | - Zhigang Zou
- Jiangsu Key Laboratory for Nano Technology National Laboratory of Solid State Microstructures Department of Physics Nanjing University Nanjing Jiangsu 210093 P.R. China
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23
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Navarro M, Campos J. Bimetallic frustrated Lewis pairs. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2021. [DOI: 10.1016/bs.adomc.2021.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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24
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Zhang L, Oishi T, Gao L, Hu S, Yang L, Li W, Wu S, Shang R, Yamamoto Y, Li S, Wang W, Zeng G. Catalytic Dehydrogenation of Ammonia Borane Mediated by a Pt(0)/Borane Frustrated Lewis Pair: Theoretical Design. Chemphyschem 2020; 21:2573-2578. [PMID: 33015881 DOI: 10.1002/cphc.202000661] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 09/27/2020] [Indexed: 11/09/2022]
Abstract
A new efficient metal-based frustrated Lewis pair constructed by (Pt Bu3 )2 Pt and B(C6 F5 )3 was designed through density functional theory calculations for the catalytic dehydrogenation of ammonia borane (AB). The reaction was composed by the successive dehydrogenation of AB and H2 liberation, which occurs through the cooperative functions of the Pt(0) center and the B(C6 F5 )3 moiety. Two equivalents of H2 were predicted to be liberated from each AB molecule. The generation of the second H2 is the rate-determining step, with a Gibbs energy barrier and reaction energy of 27.4 and 12.8 kcal/mol, respectively.
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Affiliation(s)
- Lei Zhang
- Kuang Yaming Honors School and Institute for Brain Sciences, Nanjing University, Nanjing, 210023, China
| | - Takumi Oishi
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima, 7398526, Japan
| | - Liuzhou Gao
- Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Shiyu Hu
- Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Linlin Yang
- Kuang Yaming Honors School and Institute for Brain Sciences, Nanjing University, Nanjing, 210023, China
| | - Wei Li
- Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Shengjun Wu
- Kuang Yaming Honors School and Institute for Brain Sciences, Nanjing University, Nanjing, 210023, China
| | - Rong Shang
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima, 7398526, Japan
| | - Yohsuke Yamamoto
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima, 7398526, Japan
| | - Shuhua Li
- Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Wei Wang
- Kuang Yaming Honors School and Institute for Brain Sciences, Institute of Biophysics, School of Physics, Nanjing University, Nanjing, 210023, China
| | - Guxiang Zeng
- Kuang Yaming Honors School and Institute for Brain Sciences, Nanjing University, Nanjing, 210023, China
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25
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Naglav-Hansen D, Dzialkowski K, Tobey B, Wölper C, Jansen G, Schulz S. Hungry for charge – how a beryllium scorpionate complex “eats” a weakly coordinating anion. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2020. [DOI: 10.1515/znb-2020-0034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Abstract
We present the reaction of a tris(pyrazolyl) beryllium scorpionate (TpBe) complex with a weakly coordinating anion (WCA), which yields the heteroleptic complex TpBeOC(CF3)3
1 (TpBeOR
F). The product 1 has been characterized by multinuclear NMR spectroscopy (1H, 9Be, 13C) and single-crystal X-ray diffraction (scXRD). Quantum chemical calculations (DFT, NPA, LOL) were performed to study the bonding nature in 1.
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Affiliation(s)
- Dominik Naglav-Hansen
- Institute of Inorganic Chemistry, University of Tübingen , Auf der Morgenstelle 18 , D- 72076 Tübingen , Germany
| | - Kevin Dzialkowski
- Faculty of Chemistry , University of Duisburg-Essen , Universitätsstraße 7, S07S03C30 , D-45141 Essen , Germany
| | - Briac Tobey
- Faculty of Chemistry , University of Duisburg-Essen , Universitätsstraße 7, S07S03C30 , D-45141 Essen , Germany
| | - Christoph Wölper
- Faculty of Chemistry , University of Duisburg-Essen , Universitätsstraße 7, S07S03C30 , D-45141 Essen , Germany
| | - Georg Jansen
- Faculty of Chemistry , University of Duisburg-Essen , Universitätsstraße 7, S07S03C30 , D-45141 Essen , Germany
| | - Stephan Schulz
- Faculty of Chemistry and Center for NanoIntegration (Cenide) , University of Duisburg-Essen , Universitätsstraße 7, S07S03C30 , D-45141 Essen , Germany , Fax: +49-201-18-33830,
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26
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Hidalgo N, Moreno JJ, Pérez-Jiménez M, Maya C, López-Serrano J, Campos J. Evidence for Genuine Bimetallic Frustrated Lewis Pair Activation of Dihydrogen with Gold(I)/Platinum(0) Systems. Chemistry 2020; 26:5982-5993. [PMID: 31971290 DOI: 10.1002/chem.201905793] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/22/2020] [Indexed: 01/07/2023]
Abstract
A joint experimental/computational effort to elucidate the mechanism of dihydrogen activation by a gold(I)/platinum(0) metal-only frustrated Lewis pair (FLP) is described herein. The drastic effects on H2 activation derived from subtle ligand modifications have also been investigated. The importance of the balance between bimetallic adduct formation and complete frustration has been interrogated, providing for the first time evidence for genuine metal-only FLP reactivity in solution. The origin of a strong inverse kinetic isotopic effect has also been clarified, offering further support for the proposed bimetallic FLP-type cleavage of dihydrogen.
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Affiliation(s)
- Nereida Hidalgo
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and, Centro de Innovación en Química Avanzada (ORFEO-CINQA), Consejo Superior de Investigaciones Científicas (CSIC) and, University of Sevilla, Avenida Américo Vespucio 49, 41092, Sevilla, Spain
| | - Juan José Moreno
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and, Centro de Innovación en Química Avanzada (ORFEO-CINQA), Consejo Superior de Investigaciones Científicas (CSIC) and, University of Sevilla, Avenida Américo Vespucio 49, 41092, Sevilla, Spain
| | - Marina Pérez-Jiménez
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and, Centro de Innovación en Química Avanzada (ORFEO-CINQA), Consejo Superior de Investigaciones Científicas (CSIC) and, University of Sevilla, Avenida Américo Vespucio 49, 41092, Sevilla, Spain
| | - Celia Maya
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and, Centro de Innovación en Química Avanzada (ORFEO-CINQA), Consejo Superior de Investigaciones Científicas (CSIC) and, University of Sevilla, Avenida Américo Vespucio 49, 41092, Sevilla, Spain
| | - Joaquín López-Serrano
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and, Centro de Innovación en Química Avanzada (ORFEO-CINQA), Consejo Superior de Investigaciones Científicas (CSIC) and, University of Sevilla, Avenida Américo Vespucio 49, 41092, Sevilla, Spain
| | - Jesús Campos
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and, Centro de Innovación en Química Avanzada (ORFEO-CINQA), Consejo Superior de Investigaciones Científicas (CSIC) and, University of Sevilla, Avenida Américo Vespucio 49, 41092, Sevilla, Spain
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27
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Boom DHA, de Boed EJJ, Nicolas E, Nieger M, Ehlers AW, Jupp AR, Slootweg JC. Catalytic Dehydrogenation of Amine‐Boranes using Geminal Phosphino‐Boranes. Z Anorg Allg Chem 2020. [DOI: 10.1002/zaac.201900313] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Devin H. A. Boom
- Van ‘t Hoff Institute for Molecular Sciences (HIMS) University of Amsterdam 1090 GD Amsterdam The Netherlands
| | - Ewoud J. J. de Boed
- Van ‘t Hoff Institute for Molecular Sciences (HIMS) University of Amsterdam 1090 GD Amsterdam The Netherlands
| | - Emmanuel Nicolas
- Van ‘t Hoff Institute for Molecular Sciences (HIMS) University of Amsterdam 1090 GD Amsterdam The Netherlands
| | - Martin Nieger
- Department of Chemistry University of Helsinki 00014 Helsinki Finland
| | - Andreas W. Ehlers
- Van ‘t Hoff Institute for Molecular Sciences (HIMS) University of Amsterdam 1090 GD Amsterdam The Netherlands
- Department of Chemistry, Science Faculty University of Johannesburg Auckland Park Johannesburg South Africa
| | - Andrew R. Jupp
- Van ‘t Hoff Institute for Molecular Sciences (HIMS) University of Amsterdam 1090 GD Amsterdam The Netherlands
| | - J. Chris Slootweg
- Van ‘t Hoff Institute for Molecular Sciences (HIMS) University of Amsterdam 1090 GD Amsterdam The Netherlands
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28
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Hasenbeck M, Becker J, Gellrich U. Efficient Organocatalytic Dehydrogenation of Ammonia Borane. Angew Chem Int Ed Engl 2020; 59:1590-1594. [PMID: 31573726 PMCID: PMC7003781 DOI: 10.1002/anie.201910636] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 09/18/2019] [Indexed: 11/16/2022]
Abstract
Dehydrogenation of ammonia borane by sterically encumbered pyridones as organocatalysts is reported. With 6‐tert‐butyl‐2‐thiopyridone as the catalyst, a turnover frequency (TOF) of 88 h−1 was achieved. Experimental mechanistic investigations, substantiated by DLPNO‐CCSD(T) computations, indicate a mechanistic scenario that commences with the protonation of a B−H bond by the mercaptopyridine form of the catalyst. The reactive intermediate formed by this initial protonation was observed by NMR spectroscopy and the molecular structure of a surrogate determined by SCXRD. An intramolecular proton transfer in this intermediate from the NH3 group to the pyridine ring with concomitant breaking of the S−B bond regenerates the thiopyridone and closes the catalytic cycle. This step can be described as an inorganic retro‐ene reaction.
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Affiliation(s)
- Max Hasenbeck
- Institut für Organische Chemie, Justus-Liebig-Universität Gießen, Heinrich-Buff-Ring 17, 35392, Gießen, Germany
| | - Jonathan Becker
- Institut für Anorganische und Analytische Chemie, Justus-Liebig-Universität Gießen, Heinrich-Buff-Ring 17, 35392, Gießen, Germany
| | - Urs Gellrich
- Institut für Organische Chemie, Justus-Liebig-Universität Gießen, Heinrich-Buff-Ring 17, 35392, Gießen, Germany
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29
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Bhattacharjee I, Bhunya S, Paul A. Frustrated Lewis Acid–Base-Pair-Catalyzed Amine-Borane Dehydrogenation. Inorg Chem 2020; 59:1046-1056. [DOI: 10.1021/acs.inorgchem.9b02561] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ishita Bhattacharjee
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Kolkata 700 032, India
| | - Sourav Bhunya
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Kolkata 700 032, India
| | - Ankan Paul
- School of Chemical Sciences, Indian Association for the Cultivation of Science, Kolkata 700 032, India
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30
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Hasenbeck M, Becker J, Gellrich U. Effiziente organokatalytische Dehydrierung von Amminboran. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201910636] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Max Hasenbeck
- Institut für Organische Chemie Justus-Liebig-Universität Gießen Heinrich-Buff-Ring 17 35392 Gießen Deutschland
| | - Jonathan Becker
- Institut für Anorganische und Analytische Chemie Justus-Liebig-Universität Gießen Heinrich-Buff-Ring 17 35392 Gießen Deutschland
| | - Urs Gellrich
- Institut für Organische Chemie Justus-Liebig-Universität Gießen Heinrich-Buff-Ring 17 35392 Gießen Deutschland
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31
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Ledoux A, Brunet J, Raynaud J, Lacôte E. Tunable Hydrogen Release from Amine–Boranes via their Insertion into Functional Polystyrenes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Audrey Ledoux
- Univ Lyon, Univ Claude Bernard Lyon 1, CPE Lyon CNRS, C2P2 43 Bd du 11 novembre 1918 69616 Villeurbanne France
| | - Juliette Brunet
- Univ Lyon, Univ Claude Bernard Lyon 1, CPE Lyon CNRS, C2P2 43 Bd du 11 novembre 1918 69616 Villeurbanne France
| | - Jean Raynaud
- Univ Lyon, Univ Claude Bernard Lyon 1, CPE Lyon CNRS, C2P2 43 Bd du 11 novembre 1918 69616 Villeurbanne France
| | - Emmanuel Lacôte
- Univ Lyon, Univ Claude Bernard Lyon 1 CNRS, CNES, ArianeGroup, LHCEP Bât. Raulin, 2 rue Victor Grignard 69622 Villeurbanne France
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32
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Ledoux A, Brunet J, Raynaud J, Lacôte E. Tunable Hydrogen Release from Amine-Boranes via their Insertion into Functional Polystyrenes. Angew Chem Int Ed Engl 2019; 58:15239-15243. [PMID: 31386245 DOI: 10.1002/anie.201904898] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 07/10/2019] [Indexed: 11/09/2022]
Abstract
Polystyrene-g-boramine random copolymers are dihydrogen reservoirs with tunable dehydrogenation temperatures, which can be adjusted by selecting the boramine content in the copolymers. They display a unique dihydrogen thermal release profile, which is a direct consequence of the insertion of the amine-boranes in a polymeric scaffold, and not from a direct modification of the electronics or sterics of the amine-borane function. Finally, the mixture of polystyrene-g-boramines with conventional NH3 -BH3 (borazane) allows for a direct access to organic/inorganic hybrid dihydrogen reservoirs with a maximal H2 loading of 8 wt %. These exhibit a dehydrogenation temperature lower than that of either the borazane or the polystyrene-g-boramines taken separately.
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Affiliation(s)
- Audrey Ledoux
- Univ Lyon, Univ Claude Bernard Lyon 1, CPE Lyon, CNRS, C2P2, 43 Bd du 11 novembre 1918, 69616, Villeurbanne, France
| | - Juliette Brunet
- Univ Lyon, Univ Claude Bernard Lyon 1, CPE Lyon, CNRS, C2P2, 43 Bd du 11 novembre 1918, 69616, Villeurbanne, France
| | - Jean Raynaud
- Univ Lyon, Univ Claude Bernard Lyon 1, CPE Lyon, CNRS, C2P2, 43 Bd du 11 novembre 1918, 69616, Villeurbanne, France
| | - Emmanuel Lacôte
- Univ Lyon, Univ Claude Bernard Lyon 1, CNRS, CNES, ArianeGroup, LHCEP, Bât. Raulin, 2 rue Victor Grignard, 69622, Villeurbanne, France
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33
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Guru MM, De S, Dutta S, Koley D, Maji B. B(C 6F 5) 3-catalyzed dehydrogenative cyclization of N-tosylhydrazones and anilines via a Lewis adduct: a combined experimental and computational investigation. Chem Sci 2019; 10:7964-7974. [PMID: 31853352 PMCID: PMC6839809 DOI: 10.1039/c9sc02492a] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 07/05/2019] [Indexed: 12/19/2022] Open
Abstract
Tris(pentafluorophenyl)borane-catalyzed dehydrogenative-cyclization of N-tosylhydrazones with aromatic amines has been disclosed. This metal-free catalytic protocol is compatible with a range of functional groups to provide both symmetrical and unsymmetrical 3,4,5-triaryl-1,2,4-triazoles. Mechanistic experiments and density functional theory (DFT) studies suggest an initial Lewis adduct formation of N-tosylhydrazone with B(C6F5)3 followed by sequential intermolecular amination of the borane adduct with aniline, intramolecular cyclization and frustrated Lewis pair (FLP)-catalyzed dehydrogenation for the generation of substituted 1,2,4-triazoles.
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Affiliation(s)
- Murali Mohan Guru
- Department of Chemical Sciences , Indian Institute of Science Education and Research Kolkata , Mohanpur-741246 , India . ;
| | - Sriman De
- Department of Chemical Sciences , Indian Institute of Science Education and Research Kolkata , Mohanpur-741246 , India . ;
| | - Sayan Dutta
- Department of Chemical Sciences , Indian Institute of Science Education and Research Kolkata , Mohanpur-741246 , India . ;
| | - Debasis Koley
- Department of Chemical Sciences , Indian Institute of Science Education and Research Kolkata , Mohanpur-741246 , India . ;
| | - Biplab Maji
- Department of Chemical Sciences , Indian Institute of Science Education and Research Kolkata , Mohanpur-741246 , India . ;
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34
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Mu X, Axtell JC, Bernier NA, Kirlikovali KO, Jung D, Umanzor A, Qian K, Chen X, Bay KL, Kirollos M, Rheingold AL, Houk KN, Spokoyny AM. Sterically Unprotected Nucleophilic Boron Cluster Reagents. Chem 2019; 5:2461-2469. [PMID: 32292833 DOI: 10.1016/j.chempr.2019.07.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A cornerstone of modern synthetic chemistry rests on the ability to manipulate the reactivity of a carbon center by rendering it either electrophilic or nucleophilic. However, accessing a similar reactivity spectrum with boron-based reagents has been significantly more challenging. While classical nucleophilic carbon-based reagents normally do not require steric protection, readily accessible, unprotected boron-based nucleophiles have not yet been realized. Herein, we demonstrate that the bench stable closo-hexaborate cluster anion can engage in a nucleophilic substitution reaction with a wide array of organic and main group electrophiles. The resulting molecules containing B‒C bonds can be further converted to tricoordinate boron species widely used in organic synthesis.
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Affiliation(s)
- Xin Mu
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 609 Charles E. Young Drive East, Los Angeles, CA 90095, USA
| | - Jonathan C Axtell
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 609 Charles E. Young Drive East, Los Angeles, CA 90095, USA
| | - Nicholas A Bernier
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 609 Charles E. Young Drive East, Los Angeles, CA 90095, USA
| | - Kent O Kirlikovali
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 609 Charles E. Young Drive East, Los Angeles, CA 90095, USA
| | - Dahee Jung
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 609 Charles E. Young Drive East, Los Angeles, CA 90095, USA
| | - Alexander Umanzor
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 609 Charles E. Young Drive East, Los Angeles, CA 90095, USA
| | - Kevin Qian
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 609 Charles E. Young Drive East, Los Angeles, CA 90095, USA
| | - Xiangyang Chen
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 609 Charles E. Young Drive East, Los Angeles, CA 90095, USA
| | - Katherine L Bay
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 609 Charles E. Young Drive East, Los Angeles, CA 90095, USA
| | - Monica Kirollos
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 609 Charles E. Young Drive East, Los Angeles, CA 90095, USA
| | - Arnold L Rheingold
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California, 92093, USA
| | - K N Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 609 Charles E. Young Drive East, Los Angeles, CA 90095, USA
| | - Alexander M Spokoyny
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 609 Charles E. Young Drive East, Los Angeles, CA 90095, USA.,Department California NanoSystems Institute, University of California, Los Angeles, CA 90095, USA.,Lead Contact
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35
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Boom DHA, Jupp AR, Slootweg JC. Dehydrogenation of Amine-Boranes Using p-Block Compounds. Chemistry 2019; 25:9133-9152. [PMID: 30964220 PMCID: PMC6771515 DOI: 10.1002/chem.201900679] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Indexed: 01/11/2023]
Abstract
Amine-boranes have gained a lot of attention due to their potential as hydrogen storage materials and their capacity to act as precursors for transfer hydrogenation. Therefore, a lot of effort has gone into the development of suitable transition- and main-group metal catalysts for the dehydrogenation of amine-boranes. During the past decade, new systems started to emerge solely based on p-block elements that promote the dehydrogenation of amine-boranes through hydrogen-transfer reactions, polymerization initiation, and main-group catalysis. In this review, we highlight the development of these p-block based systems for stoichiometric and catalytic amine-borane dehydrogenation and discuss the underlying mechanisms.
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Affiliation(s)
- Devin H. A. Boom
- Van 't Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041090 GDAmsterdamThe Netherlands
| | - Andrew R. Jupp
- Van 't Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041090 GDAmsterdamThe Netherlands
| | - J. Chris Slootweg
- Van 't Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041090 GDAmsterdamThe Netherlands
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36
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Oldroyd NL, Chitnis SS, Annibale VT, Arz MI, Sparkes HA, Manners I. Metal-free dehydropolymerisation of phosphine-boranes using cyclic (alkyl)(amino)carbenes as hydrogen acceptors. Nat Commun 2019; 10:1370. [PMID: 30914640 PMCID: PMC6435733 DOI: 10.1038/s41467-019-08967-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 02/05/2019] [Indexed: 11/08/2022] Open
Abstract
The divalent carbene carbon centre in cyclic (alkyl)(amino)carbenes (CAACs) is known to exhibit transition-metal-like insertion into E-H σ-bonds (E = H, N, Si, B, P, C, O) with formation of new, strong C-E and C-H bonds. Although subsequent transformations of the products represent an attractive strategy for metal-free synthesis, few examples have been reported. Herein we describe the dehydrogenation of phosphine-boranes, RR'PH·BH3, using a CAAC, which behaves as a stoichiometric hydrogen acceptor to release monomeric phosphinoboranes, [RR'PBH2], under mild conditions. The latter species are transient intermediates that either polymerise to the corresponding polyphosphinoboranes, [RR'PBH2]n (R = Ph; R' = H, Ph or Et), or are trapped in the form of CAAC-phosphinoborane adducts, CAAC·H2BPRR' (R = R' = tBu; R = R' = Mes). In contrast to previously established methods such as transition metal-catalysed dehydrocoupling, which only yield P-monosubstituted polymers, [RHPBH2]n, the CAAC-mediated route also provides access to P-disubstituted polymers, [RR'PBH2]n (R = Ph; R' = Ph or Et).
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Affiliation(s)
- Nicola L Oldroyd
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Saurabh S Chitnis
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. 15000, Halifax, NS, B3H 4R2, Canada
| | - Vincent T Annibale
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Marius I Arz
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Hazel A Sparkes
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Ian Manners
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK.
- Department of Chemistry, University of Victoria, Victoria, BC, V8W 3V6, Canada.
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37
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Han D, Anke F, Trose M, Beweries T. Recent advances in transition metal catalysed dehydropolymerisation of amine boranes and phosphine boranes. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2018.09.016] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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38
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Colebatch AL, Weller AS. Amine-Borane Dehydropolymerization: Challenges and Opportunities. Chemistry 2019; 25:1379-1390. [PMID: 30338876 PMCID: PMC6391989 DOI: 10.1002/chem.201804592] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Indexed: 11/23/2022]
Abstract
The dehydropolymerization of amine-boranes, exemplified as H2 RB⋅NR'H2 , to produce polyaminoboranes (HRBNR'H)n that are inorganic analogues of polyolefins with alternating main-chain B-N units, is an area with significant potential, stemming from both fundamental (mechanism, catalyst development, main-group hetero-cross-coupling) and technological (new polymeric materials) opportunities. This Concept article outlines recent advances in the field, covering catalyst development and performance, current mechanistic models, and alternative non-catalytic routes for polymer production. The substrate scope, polymer properties and applications of these exciting materials are also outlined. Challenges and opportunities in the field are suggested, as a way of providing focus for future investigations.
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Affiliation(s)
- Annie L. Colebatch
- Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
- Department of ChemistryUniversity of OxfordMansfield RoadOxfordOX1 3TAUK
| | - Andrew S. Weller
- Department of ChemistryUniversity of OxfordMansfield RoadOxfordOX1 3TAUK
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39
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Hegen O, Braese J, Timoshkin AY, Scheer M. Bidentate Phosphanyl- and Arsanylboranes. Chemistry 2019; 25:485-489. [PMID: 30376605 DOI: 10.1002/chem.201804772] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 10/22/2018] [Indexed: 11/06/2022]
Abstract
A new class of neutral bidentate ligands with pnictogenyl-functional sites has been obtained. The reaction of tmeda⋅(BH2 I)2 (1, tmeda=tetramethylethylendiamine) with different phosphanides yields the corresponding bidentate phosphanylboranes tmeda⋅(BH2 PH2 )2 (2 a), tmeda⋅(BH2 PPh2 )2 (2 b), and tmeda⋅(BH2 tBuPH)2 (2 c). This reaction strategy could be further extended to synthesize the first bidentate arsanylborane tmeda⋅(BH2 AsPh2 )2 (3). Depending on the substituents on the phosphorus, these compounds form different AuI complexes, to build either polymeric tmeda⋅(BH2 PH2 AuCl)2 (4 a), or monomeric tmeda⋅(BH2 PPh2 AuCl)2 (4 b) products. These compounds form also neutral oligomeric group 13/15 chain-like molecules by coordination to a boron moiety such as tmeda⋅(BH2 PH2 BH3 )2 (5 a) and tmeda⋅(BH2 AsPh2 BH3 )2 (5 b). DFT calculations provide insight into the differences between the syntheses of mono- and bidentate pnictogenylboranes.
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Affiliation(s)
- Oliver Hegen
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Jens Braese
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Alexey Y Timoshkin
- Institute of Chemistry, St. Petersburg State University, Universitetskaya nab. 7/9, 199034, St. Petersburg, Russia
| | - Manfred Scheer
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
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40
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Vasko P, Fuentes MÁ, Hicks J, Aldridge S. Reversible O–H bond activation by an intramolecular frustrated Lewis pair. Dalton Trans 2019; 48:2896-2899. [DOI: 10.1039/c9dt00228f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The interactions of the O–H bonds in alcohols, water and phenol with dimethylxanthene-derived frustrated Lewis pairs (FLPs) have been probed.
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Affiliation(s)
- Petra Vasko
- Department of Chemistry
- University of Oxford
- Inorganic Chemistry Laboratory
- Oxford
- UK
| | - M. Ángeles Fuentes
- Department of Chemistry
- University of Oxford
- Inorganic Chemistry Laboratory
- Oxford
- UK
| | - Jamie Hicks
- Department of Chemistry
- University of Oxford
- Inorganic Chemistry Laboratory
- Oxford
- UK
| | - Simon Aldridge
- Department of Chemistry
- University of Oxford
- Inorganic Chemistry Laboratory
- Oxford
- UK
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41
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Gorman AD, Bailey JA, Fey N, Young TA, Sparkes HA, Pringle PG. Inorganic Triphenylphosphine. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201810366] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Adam D. Gorman
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Jonathan A. Bailey
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Natalie Fey
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Tom A. Young
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Hazel A. Sparkes
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Paul G. Pringle
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
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42
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Gorman AD, Bailey JA, Fey N, Young TA, Sparkes HA, Pringle PG. Inorganic Triphenylphosphine. Angew Chem Int Ed Engl 2018; 57:15802-15806. [PMID: 30311990 DOI: 10.1002/anie.201810366] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 10/08/2018] [Indexed: 11/11/2022]
Abstract
A completely inorganic version of one of the most famous organophosphorus compounds, triphenylphosphine, has been prepared. A comparison of the crystal structures of inorganic triphenylphosphine, PBaz3 (where Baz=B3 H2 N3 H3 ) and PPh3 shows that they have superficial similarities and furthermore, the Lewis basicities of the two compounds are remarkably similar. However, their oxygenation and hydrolysis reactions are starkly different. PBaz3 reacts quantitatively with water to give PH3 and with the oxidizing agent ONMe3 to give the triply-O-inserted product P(OBaz)3 , an inorganic version of triphenyl phosphite; a corresponding transformation with PPh3 is inconceivable. Thermodynamically, what drives these striking differences in the chemistry of PBaz3 and PPh3 is the great strength of the B-O bond.
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Affiliation(s)
- Adam D Gorman
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Jonathan A Bailey
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Natalie Fey
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Tom A Young
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Hazel A Sparkes
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Paul G Pringle
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
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43
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Kutter F, Lork E, Mebs S, Beckmann J. Intramolecular P–H···H–Si Dihydrogen Bonding in the 5-Dimethylsilyl-9,9-dimethylxanthen-4-yl-diphenylphosphonium Cation. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00616] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Felix Kutter
- Institut für Anorganische Chemie und Kristallographie, Universität Bremen, Leobener Straße 7, 28359 Bremen, Germany
| | - Enno Lork
- Institut für Anorganische Chemie und Kristallographie, Universität Bremen, Leobener Straße 7, 28359 Bremen, Germany
| | - Stefan Mebs
- Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
| | - Jens Beckmann
- Institut für Anorganische Chemie und Kristallographie, Universität Bremen, Leobener Straße 7, 28359 Bremen, Germany
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44
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Hou Q, Liu L, Mellerup SK, Wang N, Peng T, Chen P, Wang S. Stimuli-Responsive B/N Lewis Pairs Based on the Modulation of B–N Bond Strength. Org Lett 2018; 20:6467-6470. [DOI: 10.1021/acs.orglett.8b02774] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Qinggao Hou
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing 102488, China
| | - Lijie Liu
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing 102488, China
| | - Soren K. Mellerup
- Department of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Nan Wang
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing 102488, China
| | - Tai Peng
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing 102488, China
| | - Pangkuan Chen
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing 102488, China
| | - Suning Wang
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing 102488, China
- Department of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
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45
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Ma G, Song G, Li ZH. Designing Metal-Free Frustrated Lewis Pairs Catalyst for the Efficient Dehydrogenation of Ammonia Borane. Chemistry 2018; 24:13238-13245. [PMID: 29938854 DOI: 10.1002/chem.201801932] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 06/13/2018] [Indexed: 01/08/2023]
Abstract
Ammonia borane (AB) has been in the spotlight for the chemical storage of hydrogen over the past decade. However, the development of methods for efficient and controlled hydrogen release from AB under mild conditions is still underway. Herein, using density functional theory (DFT) computations, we designed a metal-free frustrated Lewis pair (FLP) catalyst o-(BPh2 )C6 H4 (NiPr2 ) (M1) that can efficiently dehydrogenate AB to release more than two equivalents of H2 under mild conditions. Catalyst M1 can dehydrogenate not only AB to H2 N=BH2 (AOB) and H2 , but also oligomers of AOB with rather low free-energy barriers. The high dehydrogenation activity of M1 is the key of new oligomerization routes to the efficient dehydrogenation of AB to borazine (BZ) or H2 B-(NH=BH)n -NH2 (PIB) and finally to polyborazylene (PBZ) so that more than two equivalents of H2 can be released. A first-principle kinetic Monte Carlo (KMC) study reveals that the activity of our catalytic system can be tuned by varying the initial concentration of M1 and AB. This work can guide the design of catalyst for the highly efficient utilization of AB as a hydrogen storage material.
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Affiliation(s)
- Gongli Ma
- Collaborative Innovation Center of Chemistry for Energy Material, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, 200438, Shanghai, P.R. China
| | - Guoliang Song
- Collaborative Innovation Center of Chemistry for Energy Material, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, 200438, Shanghai, P.R. China
| | - Zhen Hua Li
- Collaborative Innovation Center of Chemistry for Energy Material, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, 200438, Shanghai, P.R. China
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46
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Roy MMD, Fujimori S, Ferguson MJ, McDonald R, Tokitoh N, Rivard E. Neutral, Cationic and Hydride-substituted Siloxygermylenes. Chemistry 2018; 24:14392-14399. [DOI: 10.1002/chem.201802958] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Revised: 07/06/2018] [Indexed: 11/05/2022]
Affiliation(s)
- Matthew M. D. Roy
- Department of Chemistry; University of Alberta; 11227 Saskatchewan Dr. Edmonton Alberta T6G 2G2 Canada
| | - Shiori Fujimori
- Department of Chemistry; University of Alberta; 11227 Saskatchewan Dr. Edmonton Alberta T6G 2G2 Canada
- Institute for Chemical Research; Kyoto University; Uji Kyoto, 611-0011 Japan
| | - Michael J. Ferguson
- Department of Chemistry; University of Alberta; 11227 Saskatchewan Dr. Edmonton Alberta T6G 2G2 Canada
| | - Robert McDonald
- Department of Chemistry; University of Alberta; 11227 Saskatchewan Dr. Edmonton Alberta T6G 2G2 Canada
| | - Norihiro Tokitoh
- Institute for Chemical Research; Kyoto University; Uji Kyoto, 611-0011 Japan
| | - Eric Rivard
- Department of Chemistry; University of Alberta; 11227 Saskatchewan Dr. Edmonton Alberta T6G 2G2 Canada
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47
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Vasko P, Zulkifly IA, Fuentes MÁ, Mo Z, Hicks J, Kamer PCJ, Aldridge S. Reversible C-H Activation, Facile C-B/B-H Metathesis and Apparent Hydroboration Catalysis by a Dimethylxanthene-Based Frustrated Lewis Pair. Chemistry 2018; 24:10531-10540. [PMID: 29786906 DOI: 10.1002/chem.201801871] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Indexed: 01/08/2023]
Abstract
A dimethylxanthene-based phosphine/borane frustrated Lewis pair (FLP) is shown to effect reversible C-H activation, cleaving phenylacetylene, PhCCH, to give an equilibrium mixture of the free FLP and phosphonium acetylide in CD2 Cl2 solution at room temperature. This system also reacts with B-H bonds although in a different fashion: reactions with HBpin and HBcat proceed via C-B/B-H metathesis, leading to replacement of the -B(C6 F5 )2 Lewis acid component by -Bpin/-Bcat, and transfer of HB(C6 F5 )2 to the phosphine Lewis base. This transformation underpins the ability of the FLP to catalyze the hydroboration of alkynes by HBpin: the active species is derived from the HB(C6 F5 )2 fragment generated in this exchange process.
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Affiliation(s)
- Petra Vasko
- Department of Chemistry, Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK
| | - Ili A Zulkifly
- Department of Chemistry, Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK
| | - M Ángeles Fuentes
- Department of Chemistry, Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK
| | - Zhenbo Mo
- Department of Chemistry, Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK
| | - Jamie Hicks
- Department of Chemistry, Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK
| | - Paul C J Kamer
- Leibniz Institute for Catalysis (LIKAT Rostock), Albert-Einstein-Str. 29 a, 18059, Rostock, Germany
| | - Simon Aldridge
- Department of Chemistry, Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK
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48
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Kutter F, Lork E, Beckmann J. Frustrated Lewis Pair based on a peri
-Substituted Biphenylene Scaffold. Z Anorg Allg Chem 2018. [DOI: 10.1002/zaac.201800160] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Felix Kutter
- Institut für Anorganische Chemie und Kristallographie; Universität Bremen; Leobener Straße 7 28359 Bremen Germany
| | - Enno Lork
- Institut für Anorganische Chemie und Kristallographie; Universität Bremen; Leobener Straße 7 28359 Bremen Germany
| | - Jens Beckmann
- Institut für Anorganische Chemie und Kristallographie; Universität Bremen; Leobener Straße 7 28359 Bremen Germany
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49
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Boudjelel M, Sosa Carrizo ED, Mallet−Ladeira S, Massou S, Miqueu K, Bouhadir G, Bourissou D. Catalytic Dehydrogenation of (Di)Amine-Boranes with a Geometrically Constrained Phosphine-Borane Lewis Pair. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00152] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Maxime Boudjelel
- CNRS/Université Paul Sabatier, Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069), 118 Route de Narbonne, 31062 CEDEX 09 Toulouse, France
| | - E. Daiann Sosa Carrizo
- CNRS/UNIV PAU & PAYS ADOUR, Institut des Sciences Analytiques et de Physico-Chimie pour l’Environnement et les Matériaux (IPREM UMR 5254), Hélioparc, 2 Avenue du Président Angot, 64053 CEDEX 09 Pau, France
| | - Sonia Mallet−Ladeira
- Institut de Chimie de Toulouse (FR 2599), 118 Route de Narbonne, 31062 CEDEX 09 Toulouse, France
| | - Stéphane Massou
- Institut de Chimie de Toulouse (FR 2599), 118 Route de Narbonne, 31062 CEDEX 09 Toulouse, France
| | - Karinne Miqueu
- CNRS/UNIV PAU & PAYS ADOUR, Institut des Sciences Analytiques et de Physico-Chimie pour l’Environnement et les Matériaux (IPREM UMR 5254), Hélioparc, 2 Avenue du Président Angot, 64053 CEDEX 09 Pau, France
| | - Ghenwa Bouhadir
- CNRS/Université Paul Sabatier, Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069), 118 Route de Narbonne, 31062 CEDEX 09 Toulouse, France
| | - Didier Bourissou
- CNRS/Université Paul Sabatier, Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069), 118 Route de Narbonne, 31062 CEDEX 09 Toulouse, France
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Colebatch AL, Hawkey Gilder BW, Whittell GR, Oldroyd NL, Manners I, Weller AS. A General, Rhodium-Catalyzed, Synthesis of Deuterated Boranes andN-Methyl Polyaminoboranes. Chemistry 2018; 24:5450-5455. [DOI: 10.1002/chem.201800737] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Indexed: 11/05/2022]
Affiliation(s)
- Annie L. Colebatch
- Department of Chemistry; Chemistry Research Laboratory; University of Oxford; Mansfield Road Oxford OX1 3TA UK
| | - Benjamin W. Hawkey Gilder
- Department of Chemistry; Chemistry Research Laboratory; University of Oxford; Mansfield Road Oxford OX1 3TA UK
| | - George R. Whittell
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Nicola L. Oldroyd
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Ian Manners
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Andrew S. Weller
- Department of Chemistry; Chemistry Research Laboratory; University of Oxford; Mansfield Road Oxford OX1 3TA UK
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